Features1Safely and efficiently remove the horniness on the foot skin, will not damage the normal skin of the feet. 2Perfect for polishing and repairing old dead skin on the soles of the feet to make the skin of the feet smooth. 3The universal handle diameter is 2.35mm, applicable for most nail drill machine, light and easy to install. 4Great stainless steel material, the grinding head will not rust, has excellent durability and cutting performance. 5High temperature resistance, corrosion resistance, good hardness, wear?resistant and easy to clean.SpecificationCondition: 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 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 / 0.5inPackage List1 x Nail Drill Bit 1 x Storage Box