1. Insert the bit fully into the handpiece and lock it; run it briefly at low speed to check it spins true.
2. Hold the handpiece like a pencil and position the bit at the correct angle to the nail surface.
3. Coarse grit removes product fast, so keep speed moderate and pressure light until you are confident with the bit.
4. Let the curved body follow the natural arch of the nail, using the rounded tip carefully near the cuticle area.
5. Keep the bit moving in smooth, light passes and never pause in one spot.
6. Refine with a finer bit or buffer before applying colour or top coat.
7. After the service, brush away debris, clean and disinfect the bit according to your local regulations, and dry it fully before storing.

• Flattening the arch: Holding the curved bit flat can remove too much at the apex; follow the nail's natural curve.
• Finishing with the coarse grit: Coarse leaves visible scratches; always follow with a medium or fine bit before colour or top coat.
• Pausing in one spot: Holding the bit still concentrates friction and heat; keep it moving in smooth passes.
• Pressing too hard: Pressure creates heat and discomfort; use light contact and let the grit do the work.
• Skipping bit cleaning: Packed debris dulls the bit and is unhygienic; brush, clean and disinfect after every client.

• Bit type: 6.0mm Dolphin / parabolic spiral super cut
• Grit: Coarse
• Material: Tungsten carbide
• Shank size: 3/32" (fits most professional nail drills)
• Finish options: Gold
• Best for: Bulk removal, refill debulking, contouring and shortening thick enhancements
• Care: Brush, clean and disinfect between clients; dry fully before storing
• Use: Professional nail services

Why choose a parabolic (dolphin) shape?

The curved profile follows the arch of the nail, so it removes product evenly without flattening the apex. It is a favourite for fast refills and contouring thick enhancements.

Is coarse grit too aggressive for a regular fill?

For a routine fill with little growth, coarse can remove more than you need; it is best for heavy grow-out, shortening or full product reduction. Many technicians debulk with coarse, then switch to medium or fine to refine the shape.

How do I keep a tungsten carbide bit cutting well?

Brush out dust after every client, then clean, disinfect and dry the bit fully before storing. Packed debris in the flutes is the most common reason a carbide bit starts to feel dull.

My client feels heat during filing. What should I change?

Heat means friction is building in one place, so lower the speed, lighten your pressure and keep the bit moving. Lifting off the nail briefly between passes also lets the surface cool.

How do I know when the bit needs replacing?

If you need more pressure or more passes than usual to get the same result, the bit is worn or clogged. Clean it thoroughly first; if performance does not return, replace it.