Made of diamond grinding wheel, wear-, there are 3 kinds of drill bit holders, which can be used to grind different drill bits. This electric drill grinder has high volume strength and high hardness grinding wheel Provides faster sharpening speed and convenience, improves work efficiency and saves energy. It is compact, driven by an electric drill, and supports multi-tasking including working modules. Drill bit sharpening sharpener is suitable for all types of drill bits such as HSS, carbide, drill bits and cobalt drill bits It can also be used for other tools like kitchen knives, etc. It can be used with a grinding wheel and a motor for better results. Colour:A: Black Material:ABS+Diamond Package Contents: 1 x Drill Bit Grinding Artifact Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.