Set of two 2 - 1/4" 3/8" Diamond Double Cut Grinding Burr Set 1/8" (3mm) Shank For Dremel other Rotary Tools - New Description: Turn your Dremel or other rotary tool into a high-speed grinder Diamond will provide superior cutting power Extremely durable diamond for the most-demanding material removal High speed steel 1/8" (actual 3mm) shank diameter and 1 1/2" long with an overall length of 2" Will work with all Rotary tools and Drills, chucks and collets Great for carving, grooving, shaping, filing steel, aluminum, stone, tile, wood, plastic, fiberglass - virtually anything Set of 2 - Conical grinders Includes 1 - 1/4" and 1 - 3/8" tip