【Preminum Material】 Made of high quality tungsten steel, it can be used to work on iron, steel, carbon steel, alloy steel, stainless steel, copper, aluminum and other metals and marble, jade, bone and other non-metallic. 【High Working Efficiency】 The machining efficiency is dozens of times that of the hand file and nearly ten times that of the small grinding wheel with handle. Basically, the whole pottery mill set can take place at instead of the small grinding wheel with the handle, no dust and pollution are created. 【Excellent processing quality】 After carving, the surface is smooth, the carving tool can even process a variety of high-precision mold cavities. Widely used for metalworking, tool making, model making, wood carving, jewelry making, welding, chamfering, casting, deburring, grinding, etc. 【Durability】 This grinding head is easy to use, safe and reliable. The service life is ten times that of high speed steel tools and more than 200 times that of small grinding wheels.