1. Insert the mandrel securely into a compatible 3/32" e-file.
2. Fit a compatible sanding band firmly over the mandrel.
3. Select a sanding-band grit appropriate for the service.
4. Use light, controlled passes across larger surface areas.
5. Stop the e-file before changing the sanding band.

Professional Tip: Match sanding-band grit to the service instead of using extra pressure.

How to Clean the Mandrel

• Remove Sanding Band: Take off the sanding band before cleaning.
• Remove Debris: Brush away dust and residue.
• Wash & Disinfect: Follow your professional sanitation protocol for stainless-steel tools.
• Dry Completely: Make sure the mandrel and spring area are fully dry.
• Replace Sanding Bands as Needed: Follow the sanding-band manufacturer’s reuse or disposal instructions.

• Using the Wrong Sanding-Band Size: Make sure the band fits securely.
• Changing Bands While the Drill Is Running: Stop the e-file first.
• Applying Too Much Pressure: Let the sanding band perform the filing.
• Reusing Worn Bands: Replace bands when the abrasive surface is no longer effective.

Product: Nail Drill Bit - Big Mandrel

Material: Stainless steel

Shape: Large Mandrel with Internal Spring

Grit / Coarseness: Depends on sanding band

Size: 3/32" shank

Primary Use: larger sanding-band surface work, shaping, smoothing, and finishing

Rotation: Depends on sanding band and e-file

Compatibility: Most professional nail drills that accept 3/32" bits

What is a mandrel bit used for?

A mandrel holds a compatible sanding band for prep, shaping, smoothing, or finishing.

Does the mandrel have its own grit?

No. Filing strength depends on the sanding band.

What is the difference between Big and Small Mandrel?

The Big Mandrel is designed for larger sanding bands and broader surface work.

Will it fit my nail drill?

Yes. It uses a standard 3/32" shank.