Feature:1. Mainly used to remove old dead skin on the soles of the feet and pedicure to smooth the skin of the feet.2. Exfoliates the skin without damaging the normal skin of the feet, safe and effective, you can use it with confidence.3. Stainless steel material, not easy to rust, firm and sturdy, durable, excellent cutting performance.4. Wear‑resistant, easy to clean, high temperature resistance, corrosion resistance, strong hardness.5. Light weight and portable, 2.35mm universal handle diameter, designed for most nail drill machine, easy to install.How to Use:Specification:Condition: 100% Brand NewItem Type: Nail Drill BitMaterial: Stainless SteelCharacteristics: High temperature resistance, corrosion resistance, strong hardness, long-lasting wear resistance, easy to clean.Uses: Exfoliating dead skin on the feet, manicuring, removing hangnail, exfoliating cuticles, calluses, etc.Size Chart:Model Handle Length Handle Width Grinding Head LengthGrinding Head Width B1F 31mm / 1.2in 2.35mm / 0.1in 13mm / 0.5in 7mm / 0.3in B1C 39mm / 1.5in 2.35mm / 0.1in 13mm / 0.5in 7mm / 0.3in Package List:1 x Nail Drill Bit1 x Storage BoxNote: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.