In-tool-home Diamond Coated Bead Reamer Set With 4pc Replacement Tips Reaming Bead Tool Beading Aluminum Body This is a new set of 4 diamond bead reamers and handle. Recommended for jewelers, lapidary, hobbies and crafts, modeling, home repair, etc. Holds burs, files, reamers, wire, stock or tubing for filing 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. It is versatile, easy to use and trouble free The Bead Reamer with diamond tips enlarge holes in ceramic, glass, including stone. Has an easy release chuck friction fitted into the aluminum housing which releases instantly when the collet is unscrewed. The handle is hollow for easy convenient storage of diamond tips. The handle measures approximately 4 1/2" (114 mm) long