Features:Product name: Drill grinding machineMaterial: ABS & Corundum grinding wheelColor: OrangeFunction: Quick and easy way to en the drill bitApplicable drill size: 5/64" - 13/64" (2mm-5mm) 7/32" - 21/64" (5mm-8mm) + 11/32"-1/2" (8mm-12.5mm)1. Use electric drill power drive, wear-resistant corundum grinding wheel to improve the bit rate.2. Angle And width can be adjusted.3. Simple and safe way to en the drill bit.4. Small and portable, practical tools.5. The best choice for novices and handymen.Tips: 1. Use safely according to the guidelines.2. After use, place in a dry and clean place.3. Do not use with harsh chemicals, it might reduce the lifetime.4. Place the drill ener in a place that is out of reach of children to prevent parts from harming children.Package included:As the showNote: If you have any questions, please contact us as soon as possible. Greeting