Carbide burrs come in an all-inclusive variety of grades and sizes and are used for the rapid removal of sharp edges, grinding, deburring, and excess metal material. Carbide burrs tend to be worked on ferrous and non-ferrous metals, aluminum, soft steel, and also for all non-metal materials such as stone, plastics, hardwood, and ceramic. The 1/4" Shaft Double cut carbide burr fits most small rotary tools, die grinders, for woodworking drilling carving engraving milling porting. Each carbide burr is made of heat-treated tungsten carbide which lasts a long working life, sharp and durable. Its unique tooth angle prevents chipping for the longest-lasting design possible.