... grinding discs, diamond resin grinding wheels, etc. 2. Workshop 2: tungsten carbide burrs: inch size and metric size, all standard rotary burrs ... , grout removers, wires, etc. 5. Workshop 5: titanium tubes and stainless steel tubes used in food, chemical and aerospace fields Product:We ... of DIY tools to Japan, Germany, the USA and Australia Tungsten Carbide Set for Stone dia.6/6.35mm x 20pcs/set