DIY Crafts ? ? ? High hardness, durable, not easy to wear. Abrasive cutting edge sharp, edges are maintain good. High working efficiency, perfect grinding effect and long using life. Convenient to grind, simple to use, safe and reliable. Uses: mainly used DIY grinding, polishing / jade, jade, wood, metal, mold polishing, power tools matching, and other materials, renovated, polishing, grinding.