... grinding discs, diamond resin grinding wheels, etc. 2. Workshop 2: tungsten carbide burrs: inch size and metric size, all standard rotary burrs ... tools, jewellery tools and industrial tools, like dies, taps, hss or carbide end mills, counter sinks, step drills, cobalt drills, hobs, reamers ... of DIY tools to Japan, Germany, the USA and Australia Tungsten Carbide Set for Stone dia.6/6.35mm x 20pcs/set