Feature: head diameter: Φ4mmhead length: 7mm High quality, correct handle shank diameter, 2.35mm can be fited the most of machines,Stainless steel handle, will not rust NOTES: 1. Check nail bits before use.2. Always wear eye-protective safety glasses.3. For professional use only.4. Do not use if it is dropped.5. Keep out of reach of children.6. Disinfect nail bits after use. Packing: 1pc only U-Tools Diamond Bit Model 97 Blue - D97B
