Marketing InformationThe Milwaukee® 49-94-4520 is a 4-1/2 in x 1/4 in x 7/8 in Grinding wheel (Type 27). Milwaukee® comprehensive offering of grinding and cutting wheels consists of 45 unique products ranging in diameters from 4-1/2 in to 14 in., with arbor configurations of 7/8 in., 20 mm, 1 in and 5/8 in 11. Milwaukee® abrasive offering is manufactured using three types of abrasive grains, aluminum oxide, silicon Carbide, and zirconia alumina, providing products for general purpose to specialized high performance applications.