Suitable for metal, cast iron, welds, rivets, rust protection. Ideal for sharpening, deburring and general grinding of most materials Conical; working diameter 9.5 mm, shaft diameter 3 mm, grinding head length 19 mm, total length 43 mm Compatible materials: aluminum, brass, cast iron, copper, gold, hardened steel, silver, soft metals (excluding iron), stainless steel, sheet metal and pipes. Contents: 3x 10 mm grinding wheels Note: The data is all measured manually, please allow errors of 1-3 cm due to differences in light and display, there may be color differences, please refer to the actual item received.