Forney 71814 Cut-Off Wheel with 7/8-Inch Arbor, Aluminum Type 27, AL46N-BF, 4-1/2-Inch-by-0.45-Inch Aluminum oxide metal cutting wheel Designed for metal cutting, metal abrasion, body work, metal fabrication and general repair work Used on aluminum and other non-ferrous materials Designed to be used on right angle grinders only