Feature: 1. Using high‑quality white corundum + electroplating material, it has excellent durability and cutting performance. 2. It is mainly used to polish old dead skin on the soles of the feet and repair the skin of the feet, make the skin smooth. 3. Effectively exfoliates the skin without damaging the normal skin of the feet, you can use it with confidence. 4. Corrosion resistance, strong hardness, long‑lasting wear resistance, easy to clean, convenient and practical. 5. Small and light weight, universal handle diameter is 2.35mm, fit for most nail drill machine, easy to install. How to Use: Specification: Condition: 100% Brand New Item Type: Nail Drill Bit Material: White Fused Alumina+Electroplating Characteristics: Anti-corrosion, strong hardness, long-lasting wear resistance, easy to clean Uses: Exfoliating dead skin, manicure, removing hangnail, exfoliating, calluses, etc. Size Chart: Type Handle Length Handle Width Grinding Head LengthGrinding Head Width Fine Sand 33mm / 1.3in 2.35mm / 0.1in 18mm / 0.7in 11mm / 0.4in Medium Fine Sand 33mm / 1.3in 2.35mm / 0.1in 18mm / 0.7in 11mm / 0.4in Coarse Sand 31mm / 1.2in 2.35mm / 0.1in 18mm / 0.7in 11mm / 0.4in Package List: 1 x Nail Drill Bit 1 x Storage Box Note: 1. Please allow slight error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.