14 Diamond Coated Bead Reamer Tools Beading Jewelers Jewelry Design Tools This is a new 4 piece bead reamer set These bits are great for filing glass, ceramics, tile, brick, plastics, wood, fiberglass, stone, rock carbide, gold, platinum, silver, metals or anything else that is hard This master diamond bit set allows you to shape, grind and finish with precision Recommended for jewelers, lapidary, hobby&amp;craft, modeling, home repair, etc High quality, long-wearing diamond-plated steel burs provide uniform cutting on wide a variety of materials