1. Insert the bit fully into the handpiece and lock it; run it briefly at low speed to check it spins true.
2. Support the client's finger and angle the bit beneath the free edge.
3. Fine grit removes little product per pass, so use a steady moderate speed and keep the bit moving rather than pressing harder.
4. Angle the slim tip beneath the free edge and sweep lightly to clean away debris and excess product.
5. Sweep lightly along the underside, keeping the bit moving and away from the hyponychium.
6. Check the free edge from the side to make sure the thickness is even.
7. After the service, brush away debris, clean and disinfect the bit according to your local regulations, and dry it fully before storing.

• Using the bit on the nail surface: This slim bit is designed for the underside and tight spots; use a barrel for shaping the surface.
• Pressing harder to speed up a fine bit: Extra pressure creates heat rather than faster removal; switch to a coarser grit if more product needs to come off.
• Touching the hyponychium: Contact beneath the free edge can be painful; work only on product and debris under the nail.
• Over-thinning the free edge: Removing too much weakens the tip; check thickness from the side as you work.
• Pressing too hard: Pressure creates heat and uneven results; use light, sweeping contact.

• Bit type: Under nail cleaner (slim taper)
• Grit: Fine
• Material: Ceramic
• Shank size: 3/32" (fits most professional nail drills)
• Finish options: White, Pink
• Best for: Gentle shaping, surface refinement, smoothing and finishing
• Care: Brush, clean and disinfect between clients; dry fully before storing
• Use: Professional nail services

Can I use the under nail cleaner on sidewalls too?

Yes, its slim taper also works for refining tight sidewall areas and removing buildup in narrow spots. Keep contact light, as the slim tip concentrates pressure.

Can a fine bit remove product, or is it only for finishing?

A fine bit removes product slowly, which makes it useful for light thinning and blending, but it is inefficient for heavy removal. Use it after a coarser bit to refine the surface and smooth out scratches.

What is the difference between a ceramic and a carbide bit?

Ceramic bits are lightweight and non-porous, which makes them easy to clean and a popular choice for smooth filing. Carbide bits cut with sharp flutes and are often preferred for fast removal; many technicians keep both and choose by service.

How do I avoid making the free edge too thin from underneath?

Work in short, light passes and check the nail from the side after each one. Stop once the underside is clean and the edge looks even rather than chasing a very thin tip.

Why is my client uncomfortable when I clean under the nail?

Discomfort usually means the bit is getting too close to the hyponychium or the speed is too high. Lower the speed, change the angle so the bit only touches product, and work more slowly.