... Workshop 1: diamond electroplated products: diamond burrs, diamond files, diamond stone sharpeners, diamond electroplated cutting discs, diamond ... : inch size and metric size, all standard rotary burrs 3. Workshop 3: diamond wet soft polishing ... taps, hss or carbide end mills, counter sinks, step drills, cobalt drills, hobs, reamers, etc. We ... Australia Ti Cross Type, Carbide Tipped drill Bit 5pcs/set