... -1 2.shank shape:round 3.usage:for tile & glass 4.dia.3-20mm We have the following workshops: 1. ... , like dies, taps, hss or carbide end mills, counter sinks, step drills, cobalt drills, hobs, reamers, etc. We have 18 years ... DIY tools to Japan, Germany, the USA and Australia Tile & Glass Bit-1(Round Shank) dia.3-20mm