... , engraving, carving on metal, wood, bone, jade, PVC, glass, stone Catalog:Description:1. Most modern galvanisation process, safe and lasting ... metal, wood, bone, jade, PVC, glass and stone carving, can be used as glass drill bit, diamond drill bit, jewelry drill ... polishers, sintered diamonds, diamond disc, polishing brushes and mounted stone etc.Welcome to download our catalog from our website: www ...