Supplied as a pack of three, with one of each in the pack. A cylindrical bit 1.2mm diameter by 4.0mm long, a 2.1mm taper and a 2.3mm diameter cone end bit. Made of wear resistant highly compressed fine granular tungsten. Used for vibration-free milling of high accuracy dimensions. It is advisable to secure workpieces well. For milling steel,cast steel, non-ferrous metals, plastics and extremely hard materials. May be used for technical work, for engraving and milling of PC cards. Shank diameter 2.35mm.