Ideal for a variety of general uses, including surface blending, cleaning and polishing; can be used on CNC equipment. Engineered to operate at high speeds. With 1/4” shank. Applicable for rubber and plastic mold cleaning, cleaning pipe ID, removing rust, weld scale and spatter, cleaning castings, burr removal, rubber flash removal, carbon removal, spot facing, cleaning and finishing recessed areas. As a safety precaution, shank must be fully inserted into the chuck or collet and tightened securely. 0.005" Fill diameter. Measures 1/2" diameter by 2-3/4" length.