Material : Stainless steel Model Number : Nail Drill Use For : Electric Nail Drill Machine Item Category : Nails Accessoires Model Type : Manicure Pedicure Tool Suitable For : removing dead skin Usage : Milling Cutters For Nail Item Name:Carbide Nail Bithead diameter:as picture head materal:CarbideDrill Bit Package List:1 PCS*Carbide Nail Bit 1)2.35mm (3/32 inch) shank diameter, our drillbitfit for most electric manicure machines on the market. 2) Check nail bits before use, if it's broken, do not use. 3)Always wear eye-protective safety glasses, avoiding the chippings to hurt your eyes. 4) For professional use only. 5) If the bits drop down, please check whether it's broken or not. if it's broken, for safety, do not use 6) Keep out of reach of children. 7) Disinfect nail bits after use.