Features. For use with drills, straight and die grinders.. Fine/Medium for light duty.. Coarse for general purpose and X-Coarse for heavy duty.. Size - 3/4 in.. Coarse wire.. 1/4 in. stem.. 20,000 maximum RPM.. For all cordless, electric and air drills.. General purpose cleaning deburring of many surfaces, including threads, garden hand tools, engine parts, etc.. Clamshell.. Dimension - 7 x 6.5 x 4.25 in.. Item weight - .2 lbs.