Feature: 1. Safely and efficiently remove the horniness on the foot skin, will not damage the normal skin of the feet. 2. Perfect for polishing and repairing old dead skin on the soles of the feet to make the skin of the feet smooth. 3. The universal handle diameter is 2.35mm, applicable for most nail drill machine, light and easy to install. 4. Great stainless steel material, the grinding head will not rust, has excellent durability and cutting performance. 5. High temperature resistance, corrosion resistance, good hardness, wear‑resistant and easy to clean. Specification: Condition: 100% Brand New Item Type: Nail Drill Bit Material: Stainless Steel Characteristics: 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 A3F 37mm / 1.46in 2.35mm / 0.1in 20mm / 0.8in 13mm / 0.5in A3C 38mm / 1.5in 2.35mm / 0.1in 20mm / 0.8in 13mm / 0.5in. Package List: 1 x Nail Drill Bit1 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.