Dremel Alum Oxide Grind Stone,Cylindrical DRE8153
Ideal for sharpening, deburring and general purpose grinding on most materials including stainless steel. Specially designed for working with conic surfaces. The bit diameter is 3/16-inches (4.8-millimeters) and the shank diameter is 1/8-inch (3.2-millimeters). Use the 415 dressing stone to clean the surface of the grinding stone and restore its original shape. You can also use the dressing stone to create a grinding stone with just the right shape for that special job. For best results, insert the accessory bit all the way into the tool and then back it out slightly before tightening down. This provides plenty of shank for the collet or chuck to hold onto the bit.