Quick answer
Use 80 grit for fast shaping and heavy acrylic removal; use 150 grit for smoothing, refining, and finishing natural or artificial nails.
Why grit matters
Grit refers to the abrasiveness of the file surface. Lower numbers mean coarser grits that remove material quickly; higher numbers mean finer grits that polish and smooth. Choosing the right grit saves time and prevents damage.
80 grit: aggressive shaping
An 80 grit file is coarse enough to shorten and shape acrylic nails, gel extensions, and hard overlays. It removes material fast, so you need a light hand to avoid over-filing. Not recommended for natural nails or thin enhancements.
150 grit: smoothing and finishing
A 150 grit file is medium-fine, ideal for refining the shape after coarse filing, smoothing the nail surface, and preparing for polish or gel. It works well on natural nails, acrylics, and gels without leaving deep scratches.
Decision rules
- For heavy shaping or shortening acrylic nails: Choose an 80 grit file. It removes material quickly and efficiently. Use a light touch to avoid thinning the nail too much. Pair with a 150 grit file for final smoothing.
- For smoothing, refining, or finishing natural nails: Choose a 150 grit file. It gently smooths the surface and edges without causing damage. Avoid using 80 grit on natural nails to prevent thinning and sensitivity.
- For a middle ground between shaping and smoothing: A 100 grit file works for both light shaping and smoothing. It is less aggressive than 80 but coarser than 150. Keep both 80 and 150 files in your kit for maximum versatility.
Product facts
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Premium Jumbo Square Shape 150/150 File (10 pcs): Dual-sided grit 150 on both sides ensures consistent, even filing. This file is a reliable choice for finishing and refining both natural and artificial nails with a smooth result.
Premium Jumbo Square Shape 150/150 File (10 pcs)
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Premium Diamond Shape 80/80 File (25 pcs): Each pack contains 25 high-quality files with a uniform 100/100 grit. The consistent 100 grit offers a middle ground between 80 and 150, suitable for general shaping and smoothing in a salon setting.
Premium Diamond Shape 80/80 File (25 pcs)
Which grit fits you?
Best for
- Nail technicians who frequently work with acrylics and need fast shaping
- Home users who want to refine and finish natural nails without damage
Not for
- Anyone who only maintains natural nails should avoid 80 grit files
