Imagine you’ve got a client with brittle, peeling nails. You’re weighing 180/240 grit blocks versus 4-way blocks to smooth ridges without damage, while keeping hygiene in focus. You’ll want durability, ergonomic feel, and a gentle, stepwise approach that preserves fragility. Curious about which picks fit best and why they matter for 2026 trends? Keep going to find your ideal set.
Key Points
- Use 180/240 grit buffers for damaged nails to smooth ridges without over-abrasion, per our grit guidance.
- Opt multi-sided 4-way blocks to transition from filing to polishing, minimizing stress on fragile nails.
- Choose washable EVA-backed buffers for hygiene and repeated use in salon or home settings.
- Include sets with 100/180 or 80/80/100 grits for versatile reshaping and gentle finishing.
- Look for curved, ergonomic designs (3.5″ length) for better control around cuticles during delicate buffing.
Nail Buffer Block Set 3-Sided Grit 10 Count
If you want a pro-grade buffer that covers more area per stroke, the Nail Buffer Block Set with 3-sided grit (10 count) is your best bet. You’ll get a 3-way buff with coarse 80/80/100 grit, 3.5″ long, orange blocks that tackle acrylics, gel polish, pedicures, and manicures. The white corundum coating, paired with a high-elastic sponge, delivers smooth buffing and quick results. It’s ergonomic, 3.5 x 1.2 x 1 inches, fits the palm, and reduces hand fatigue. Easy to maintain, rinse after use, dries fast, durable, and resists shedding for reliable weekly prep and finishing.
Best For: Nail technicians and at-home users who want pro-grade, fast, and durable buffers that cover more surface per stroke for acrylics, gel polish, pedicures, and manicures.
Pros:
- 3-sided grit (80/80/100) for quick, versatile buffing and surface refinement
- Ergonomic, palm-fit design (3.5 x 1.2 x 1 in) reduces hand fatigue during sessions
- Durable white corundum coating with a high-elastic sponge that resists shedding and cleans up with rinsing
Cons:
- May require more frequent replacement for heavy acrylic/dip powder use
- Orange color may show wear or discoloration over time with frequent use
- Requires rinsing and drying after use to maintain hygiene, adding a small maintenance step
4 Way Shiny Block / 4 Step Buffing Block Shine Nail Buffer
The Way Shiny Block / 4 Step Buffing Block Shine Nail Buffer stands out for anyone seeking a quick, at-home upgrade to smooth and shine natural or artificial nails with a single tool. This Cala 4-step buffing block uses a 4-way sponge design to file edges, remove ridges, smooth surfaces, and deliver a high-gloss finish without a top coat, lasting about a week. Suitable for natural and artificial nails, it’s easy for DIY at home or professional use, durable, and washable. It can remove nail glue, works on nails and even pets, and comes in a compact 3.5 x 1.4 x 1.1 cm white block.
Best For: anyone seeking a quick, at-home or professional nail buffing solution for natural or artificial nails that provides a high-gloss shine without a top coat.
Pros:
- 4-way sponge design files edges, removes ridges, smooths surfaces, and delivers shine in one tool
- Delivers high gloss that lasts about a week without needing a top coat
- Durable, washable, and usable on both natural and artificial nails (and even nail glue)
Cons:
- May be less effective on severely damaged or heavily ridged nails
- Small block size (3.5 x 1.4 x 1.1 cm) may feel less comfortable for users with larger hands or for those needing more aggressive filing
- Shine finish is temporary and may require reapplication or use of additional maintenance tools for long-lasting results
ForPro Buffing Block, 180/240 Grit, 4-Sided (20)
ForPro Professional Collection Buffing Block stands out for pros and at-home users who want reliable four-sided buffers with 180/240 grit to prep nails without causing damage. These flexible foam blocks never yellow and feature four sides at 180/240 grit, designed to avoid scratching natural nails. Each 3.75″ by 1″ by 1″ block helps you buff before lacquer or gel, prepping for a flawless manicure or pedicure. In a 20-count box, you get clear, reusable storage containers for easy organization. ForPro backs every purchase with a 100% unconditional guarantee, offering value and quality for professionals and consumers alike.
Best For: Pros and at-home users seeking reliable four-sided buffers with 180/240 grit to prep nails without damage.
Pros:
- Flexible foam blocks that never yellow
- Four-sided 180/240 grit designed to avoid scratching natural nails
- Includes a 20-count box with clear, reusable storage containers
Cons:
- Grit is fixed at 180/240; not adjustable for finer/coarser needs
- May be bulkier than single-use buffers for travel
- Requires replacement when wear becomes noticeable
Revlon Shape ’N’ Buff Nail Buffer Block
Looking for a one-tool solution that shapes and shines natural nails? The Revlon Shape ’N’ Buff Nail Buffer Block is an all-in-one manicure tool for shaping and shining your natural nails in a single device. With two surfaces—shaping/smoothing and buffing to a glossy finish—and four high-quality buffing faces, it delivers smooth nails and long-lasting shine. Its professional length gives you superior control, helping you achieve perfectly shaped, smooth, shiny nails at home. This multitasker consolidates filing and buffing, offering a quick, salon-like finish. Revlon’s global reach adds reliability to your at-home manicure routine.
Best For: Busy home manicurers seeking an all-in-one tool to shape and shine natural nails with salon-like results.
Pros:
- Two surfaces for shaping/smoothing and buffing to a glossy finish, plus four buffing faces for versatility.
- Professional length provides better control for precise nail shaping.
- Consolidates filing and buffing into one device, saving time and tools.
Cons:
- May not be ideal for those needing nail art prep beyond shaping and buffing.
- Less effective on artificial nails or extensions; designed for natural nails.
- Requires regular replacement or cleaning of buffing surfaces to maintain performance.
Maryton Mini Nail Buffer Blocks (50 Count)
Maryton Mini Nail Buffer Blocks (50 Count) stand out for professionals who want consistent results with minimal waste. These 180/240 grit professional orange buffers come in a 50-count bundle, designed for salon and at-home use. You’ll prep nails for acrylic, polish, gel, or dip powder, smoothing rough edges and surfaces to boost color longevity. The ultra-premium abrasive won’t scratch natural nails, preserving health while you work. At 1.5 x 1 inches, they’re compact and disposable, ideal for quick, precise sessions. Use them for buffing and light sanding in art projects, with extended utility across varied kits and jobs.
Best For: Professional nail technicians and enthusiasts seeking consistent, waste-minimizing prep for acrylic, gel, polish, or dip powder applications.
Pros:
- Uniform 180/240 grit for smooth prep without gouging natural nails
- 50-count bundle provides extended use and cost efficiency
- Compact 1.5 x 1 inch disposable buffers ideal for salons and at-home manicures
Cons:
- One-time-use design may generate more waste compared to reusable buffers
- May be too small for users with larger hands or preference for bulkier buffers
- Limited to 50-count packs in this listing; may require restocking more frequently for high-volume salons
Nail File & Buffer Set, 10 Pcs, 100/180 Grit
If you want a versatile, beginner-friendly kit, this Nail File & Buffer Set delivers: 10 pieces in one, featuring double-sided 100/180 grit files and reusable buffer blocks with a high-quality sponge surface. The set includes five nail files and five buffer blocks, all washable and durable. Use the coarse 100 grit to shape nails, remove gel, and trim to your desired length; switch to the fine 180 grit to polish, buff grease, and smooth surfaces. Suitable for gel, acrylic, natural, or powder-dipped nails, these half-moon, ergonomic pieces are easy to grip and travel-ready.
Best For: This versatile, beginner-friendly Nail File & Buffer Set is best for those starting home nail care who need a complete 10-piece kit for shaping, buffing, and smoothing natural, gel, acrylic, or powder-dipped nails.
Pros:
- Double-sided 100/180 grit files provide both shaping and finishing in one tool
- Reusable, washable buffer blocks with high-elasticity sponge surface for durable use
- Ergonomic half-moon design and travel-friendly size for easy handling and portability
Cons:
- 10 pieces total might be more than needed for casual users
- Grits are coarse for very delicate natural nails if overused
- Buffers are reusable but may require regular cleaning to maintain hygiene
Maryton Nail Buffer Sanding Block Kit (10 PCS)
The Maryton Nail Buffer Sanding Block Kit (10 PCS) stands out for professionals and DIYers who want long-lasting, reusable tools that protect the nail surface while prepping for gel or acrylic applications. You get ultra lightweight, durable blocks that are washable, with edges that resist wear for longer use. The 60/100 grit set includes ten pieces in black and purple, offering effective grinding and buffing without harsh effects on skin. It’s easy to use for home mani-pedi prep and salon-level results, suitable for beginners or seasoned techs, helping you prep, maintain, and save on frequent replacements.
Best For: Professionals and DIY nail enthusiasts seeking long-lasting, reusable buffers that protect the nail surface while prepping for gel or acrylic applications.
Pros:
- Ultra lightweight and durable, with washable construction for long-term use
- Edges resist wear, providing longer-lasting performance across multiple uses
- 60/100 grit set delivers effective grinding and buffing with minimal skin irritation
Cons:
- 10-piece set may be more than needed for casual users
- Colors limited to black and purple, with no additional grit variations
- Requires proper cleaning to maintain performance and longevity
Maryton Nail Buffer Blocks – Fine Grit 180/240 (5)
Looking for a versatile buffer that suits both beginners and pros? Maryton Nail Buffer Blocks offer a 3-way blue buffer with fine grit options #180 and #240 in a 5-pack. Use #180 to prep nails for gel polish, acrylic, or dip powder, then finish with #240 for a smoother touch. Designed for salon-grade durability, these blocks resist scratching natural nails and are washable for repeated use. Perfect for at-home manicures, they support long-lasting polish or press-on wear. Suitable for all skill levels, this kit blends professional quality with easy maintenance and reliable performance.
Best For: Individuals seeking a versatile, beginner- to pro-friendly nail buffer that delivers salon-grade results and long-lasting wear for gel, acrylic, dip powder, or polish.
Pros:
- Three-way blue buffer with both #180 and #240 grit for effective prep and a smooth finish.
- Durable, washable design suitable for repeated at-home use without scratching natural nails.
- Suitable for all skill levels, making it easy to achieve professional results at home.
Cons:
- May require additional buffing tools for those seeking ultra-high polish finishes.
- Grits are fixed (#180/#240), offering limited customization beyond these two options.
- Bulk pack (5 blocks) might be more than needed for casual users.
Maryton Nail Buffer Block, Medium/Fine Grit (5)
Maryton’s Medium/Fine Grit Nail Buffer Block stands out for at-home mani-pedicure enthusiasts who want salon-quality results without stepping into a spa. This OPTIMAL BUFFING BLOCK works on artificial surfaces—acrylics, gels, polygel, and dip powder—so you can prep nails before color or remove top coats with ease. It’s a premium salon quality, washable, durable, and long-lasting tool that outperforms similar buffers.
With a 100/180 grit, you shorten and shape artificial nails at 100 grit, then smooth and prep natural nails at 180 grit. It buffs before gel or acrylic, aids dip powder removal, and helps shorten acetone soak time, supporting longer-lasting manicures.
Best For: At-home manicure and pedicure enthusiasts seeking salon-quality prep and removal support for artificial nails (acrylics, gels, polygel, and dip powder).
Pros:
- Premium salon quality, washable, durable, and long-lasting buffer block
- Effective 100/180 grit system for shaping artificial nails and prepping natural nails
- Aids in shortening acetone soak time and removing top coats during dip powder removal
Cons:
- May be less suitable for beginners who prefer simpler, single-grit buffers
- Requires drying/cleaning after use to maintain longevity
- May wear down with heavy usage; rotation or replacement might be needed periodically
Nail Buffers 50 Pack for Acrylic & Natural Nails
If you want bulk, reliable buffing blocks for both acrylic and natural nails, these Nail Buffers 50 Pack are a solid choice: a compact 1.4” x 1” block with a durable 100/180 grit, designed for quick touch-ups or full buffing sessions at home or on the go. These buffers come in a 50-pack, built with high-quality sandpaper and EVA sponge for longevity. They’re double-sided, offering coarse 100 grit and fine 180 grit, suitable for prepping nails before enhancements or smoothing natural, acrylic, gel, or toe nails. Their portable size fits purses or bags, delivering salon-quality buffing anywhere. Perfect for professional or home use.
Best For: Professionals and at-home users needing bulk, portable buffing blocks for quick touch-ups and full buffing on natural, acrylic, gel, or toe nails.
Pros:
- Double-sided 100/180 grit for versatile buffing and smoothing
- Compact 1.4” x 1” size fits purses or bags for on-the-go use
- 50-pack provides bulk value and consistent quality
Cons:
- Small block may feel less comfortable for extended filing sessions
- Grits may wear down with heavy use, requiring replacement more often
- Not suitable for intensive nail shaping or heavy filing on very brittle nails
12-Pack 4-Sided Nail Buffer Block, Medium Grit White
This 12-pack Pack 4-Sided Nail Buffer Block in Medium Grit White is ideal for rapid snag removal and smooth prep, thanks to its four identical grit sides (150) and inside dense sponge for consistent sanding. You get a washable, reusable block with a 4-sided surface, all at medium grit for both natural and acrylic nails. Use it to sand down snags, shape nails, and leave a smooth finish before treatments or polish. Each block weighs about 6 g and measures roughly 9.5 cm by 2.5 cm by 2.5 cm, making it portable for on-the-go use. Suitable for home, studio, or salon prep.
Best For: Individuals seeking a portable, reusable 4-sided nail buffer for prepping natural or acrylic nails at medium grit before treatments or polish.
Pros:
- Four identical 150 grit sides provide consistent sanding for snag removal and prep.
- Washable and reusable, with a durable inside sponge for even results.
- Lightweight and compact (about 6 g; ~9.5 x 2.5 x 2.5 cm) for on-the-go use.
Cons:
- None of the sides offer varying grits, which limits multi-step filing options.
- May require replacement after extended heavy use due to wear on grit surface.
- Pack includes 12 units; may be more than needed for casual users.
Nail File & Buffer Block – 100/180 Grit (Black)
The Nail File & Buffer Block – 100/180 Grit (Black) stands out for anyone seeking a versatile duo: a 100 grit coarse side for smoothing hard nails and a 180 grit fine side for refining edges, all in a reusable, double-sided block. You get a 7.047 × 0.748 inches nail file and a 3.6 × 1.4 × 1 inches sanding block, designed for both sides to be reused. Use the 100 grit for polishing hard nails or toenails, and switch to 180 grit for refining edges. Ideal for natural nails, acrylics, cuticles, touch-ups, and salon-grade wear-resistance. Suitable for nail art enthusiasts.
Best For: Beauty art enthusiasts and nail art lovers seeking a versatile, reusable dual-grit nail file and buffer for natural nails, acrylics, and manicures.
Pros:
- Dual-sided design with 100/180 grit for coarse smoothing and fine refinement
- Reusable, durable block compatible with both sides
- Suitable for natural nails, acrylics, cuticles, touch-ups, and salon use
Cons:
- May feel abrasive for very delicate natural nails if used with excessive pressure
- Grits are fixed; not easily replaceable, requiring full replacement when worn
- Bulkier than slim files, may be less convenient for purse portability
4-Way Nail Buffer Block Kit (4 Pcs) Grits 120/240/600/3000
Way Nail Buffer Block Kit (4 Pcs) with grits 120/240/600/3000 is ideal if you want a versatile, all-in-one solution that restores shine quickly without spa visits. This four-sided kit smooths, buffs, and polishes natural or acrylic nails, delivering a glossy finish. Made from premium EVA foam, it’s sturdy yet flexible for safe, effective use. Each block provides four functions, letting you file, smooth, buff, and polish in one step. You get a week-long shine from a single use, plus travel-friendly, lightweight design for home or salon use. Satisfaction is backed by supportive customer service.
Best For: individuals seeking an all-in-one, travel-friendly nail buffing solution for fast, glossy nails on natural or acrylic nails.
Pros:
- Four-sided blocks deliver filing, smoothing, buffing, and polishing in one step
- Premium EVA foam is sturdy yet flexible for safe use
- Provides a week-long shine from a single use and is travel-friendly
Cons:
- May require consistent use for best long-term results
- Not a replacement for professional spa treatments when heavy nail-care is needed
- May be less effective on severely damaged or extremely brittle nails
Maryton 4-Way Nail Buffer Block (2 Count)
Maryton 4-Way Nail Buffer Block (2 Count) stands out for natural, chemical-free shine with its 4-way design—file, smooth, buff, and polish—so you can restore damaged nails at home without extra tools. This all-in-one block delivers a ten-day shine, helping maintain glossy natural nails while strengthening weak or damaged nails. Use it at home to buff fingernails and toenails, no additional polishes required. It’s durable and long-lasting, outperforming similar buffers while preserving nail condition over time. The 2-count package suits gifting or personal use, making it a portable, ready-to-go solution for quick, chemical-free nail care.
Best For: Those seeking an all-in-one, chemical-free nail care solution for at-home use that strengthens and adds a 10-day natural shine without extra tools.
Pros:
- All-in-one 4-way buffer (file, smooth, buff, polish) reduces need for separate tools.
- Long-lasting natural shine (up to 10 days) with nail-strengthening benefits.
- Durable, high-quality blocks that maintain nail condition over time.
Cons:
- May require gentle, careful use to avoid over-buffing on very soft nails.
- Some users might prefer colored polishes or stronger, synthetic finishes beyond a natural shine.
- 2-pack size may be more than-needed for casual users or those with fewer nails to care for.
2 Pack Buffer Block Nail File Set (100/180 Grit)
This 2-pack Buffer Block Nail File Set with 100/180 grit delivers both power and finesse: the coarser 100-grit block tackles hard nails and toenails, while the finer 180-grit block smooths edges and polishes to a flawless finish, making it a versatile choice for professionals and DIY enthusiasts alike. You get two sturdy blocks that are washable and wear-resistant, sized 9.5 x 3.5 x 1.5 cm, available in black and purple. Use the coarser block for tough nails, the finer for trimming, buffing, and polish between sessions, with a comfortable grip for precise results.
Best For: Professional nail technicians and DIY enthusiasts seeking a two-pack buffer block with distinct 100/180 grit for tackling hard nails and refining edges.
Pros:
- Versatile 100/180 grit combination for shaping, smoothing, and polishing.
- Durable, washable, and wear-resistant construction for repeated salon or home use.
- Comfortable grip and compact size (9.5 x 3.5 x 1.5 cm) for precise control.
Cons:
- Limited color options (black and purple) may not suit all preferences.
- May require separate storage or cases to prevent loss of individual blocks.
- Not ideal for extremely thick or severely damaged nails without additional tools.
Factors to Consider When Choosing Nail Buffer Block for Damaged Nails
When choosing a nail buffer block for damaged nails, consider the grit range and how it affects smoothing without over-sanding. Look at the buffer block material for durability, plus an ergonomic design that fits your grip for precise use. Also factor in maintenance and longevity to ensure you get consistent results over time.
Grits For Damaged Nails
Ever wondered which nail buffer grits work best on damaged nails? For damaged nails, choose buffers with finer grits (180–240) to gently smooth surfaces without removing too much healthy nail. Start with a coarser step only if there are significant ridges or unevenness, then move to finer grits to finish; avoid jumping between very coarse and very fine without gradual progression. Avoid high-abrasion grits (100 or lower) on weakened nails, as aggressive filing can cause micro-tears and further damage. Use buffers with flexible foam or sponge backing to conform to the nail plate and reduce concentrated abrasion on damaged areas. Regular, light buffing with appropriate grit can help prep damaged nails for repair products, but should be limited to short sessions to prevent thinning.
Buffer Block Material
Buffer block material matters because it affects gentleness, durability, and hygiene on damaged nails. When you pick a buffer, look for premium abrasive materials like white corundum or EVA foam blocks that are gentle and minimize scratching. Choose a durable, washable surface with secure adhesion to prevent shedding or crumbling during use. Favor blocks that combine coarse and fine grits (80/100 or 100/180 ranges) to shape and smooth damaged nails safely without causing more trauma. Prefer high-elastic, non-yellowing foam or sponge that conforms to the nail surface for even abrasion. Ensure the buffer is reusable and easy to clean to maintain hygiene and reduce residue buildup on damaged nails.
Grit Range Options
Grit range options matter because they determine how aggressively a buffer reshapes and smooths damaged nails. You’ll find coatings span from coarse 80–100 grit for rapid smoothing to medium 150 grit and fine 180–240 grit for refined shaping and finishing. When nails are damaged, start with a coarser grit to even out ridges, then progress to finer grits to minimize further abrasion and thinning. Avoid using too coarse a grit, which can cause micro-scratches and irritation; choose the mildest grit that effectively smooths the surface. Multi-sided or 4-way buffers help you move from shaping to buffing to polishing, reducing aggression at each step. Consistency and quality of the abrasive material, like premium EVA foam with stable grit, prevent gouging and support safer rehabilitation.
Ergonomic Design Benefits
Ergonomic design matters because a comfortable, lightweight buffer reduces hand fatigue and improves control during use on damaged nails. When you pick a block sized around 3.5 inches with a curved, half-moon shape, you’ll notice smoother handling during sessions that prolong nail care. A comfortable grip and light construction help you maintain steady pressure as you smooth ridges without twisting your wrist. Foam or sponge-backed surfaces contour to the nail, boosting contact and reducing pressure points on fragile nails. Prioritize compact dimensions, such as 3.5 x 1.2 inches, so you can maneuver around cuticles with minimal effort. Travel-friendly, palm-sized buffers also support consistent use, whether at home or in a salon setting.
Maintenance And Longevity
When choosing a nail buffer block for damaged nails, prioritize hygiene, longevity, and gentle performance to protect fragile beds. Opt for a washable, reusable design to keep hygiene high and extend lifespan between replacements. Choose blocks with durable, wear-resistant surfaces that resist crumbling or shedding under frequent use. Look for multiple grit options (e.g., 100/180 or 180/240) to gradually refine damaged nails without causing further harm. Favor ergonomic shapes and secure padding to minimize extra pressure on fragile, damaged nails during use. Ensure compatibility with natural nails and nail enhancements to avoid over-aggressive sanding on compromised nail beds. Prioritize simple maintenance steps and clear replacement timelines to maintain performance, hygiene, and safety over time.
Versatility Of Use
Could you make the most of a nail buffer block by choosing one that’s truly versatile? Look for multi-step or 3- to 4-way blocks that file, smooth, buff, and polish in one tool, supporting damaged natural nails and enhancements. Select blocks with varying grits—coarse for shaping and finer grits for smoothing and finishing—to address ridges without over-scratching fragile nails. Ensure the buffer is reusable and washable, so you can reuse it without degrading performance on delicate nail beds. Prefer blocks designed for both natural and artificial nails to manage damage from acrylics, gels, or dip powders in a single tool. Prioritize ergonomic, compact designs that give solid control around cuticles, minimizing additional damage during use.
Common Questions
How to Choose Grit for Damaged Nails?
Grain matters: start with a super-fine grit for damaged nails, like 180–240, to smooth without tearing. If you see ridges, switch to 150–180 to level them gently. Use even, light strokes and don’t press hard. Buff slowly, stop if you feel pain or heat, and moisturize afterward. Skip rough blocks; seal with cuticle oil to promote healing. Progress to 280–320 only when nails feel resilient.
Are 4-Sided Blocks Gentler Than 3-Sided?
A four-sided buffer isn’t inherently gentler than a three-sided one. It depends on the grit and how you use it. If you stay on the gentler grits and don’t press hard, both can work safely. The key is to follow manufacturer guidelines, move slowly, and listen to your nails. Use light, even strokes, and switch sides as needed to avoid over-sanding. Stop if you feel heat or discomfort.
Can Buffers Cause More Damage if Overused?
Yes, buffers can cause more damage if you overuse them. Over-sanding or using a rough grit too often thins your nail plate, leading to brittleness and peeling. Limit sessions to a few minutes, 1–2 times weekly, and switch to gentler grits as nails improve. Don’t buff dry; apply a lightweight oil or moisturizer afterward. If you notice redness, pain, or thinning, pause and consult a pro. Protect nails with base coats and hydration.
Do Some Blocks Work on Natural Vs Acrylic Nails?
Some blocks work differently on natural versus acrylic nails. You’ll notice gentler, non-abrasive buffers suit natural nails, while softer, sealing buffers pair with acrylics to avoid lifting. You’ll also find ceramic or fine-grit options help both, but you should adjust pressure to avoid thinning. By treating each type like a familiar path, you can maintain healthy shine without damage, keeping your nails resilient as you switch between natural and enhanced looks.
How Often Should I Replace Buffers for Hygiene?
You should replace buffers for hygiene after 2 weeks of regular use or if they show wear, tears, or contamination. Clean them daily with soap and water, then let them air dry fully before using. Don’t share buffers, and avoid using damaged ones on nails to prevent infections. If you have fungus or irritation, swap immediately and consult a pro. Consider keeping a spare buffer to rotate and reduce reuse.