... shank 3.Zinc Plated Zinc plated Diameter 5mm-150mm diamond glass hole saw Zinc plated Diamond glass ... cutter Diameter from 2mm-150mm, Threaded, Straight and round shank, It could be used for glass, tile and ... Bits, also know as Diamond Hole Saws, are used to drill glass,ceramics, porcelain, ceramic and porcelain ... , and fiberglass hole drilling . Size is from 2mm—150mm ,it is very easy to use , just add ...