Forney 71800 Cut-Off Wheel with 7/8-Inch Arbor, Metal Type 27, A36R-BF, 4-1/2-Inch-by-0.090-Inch Aluminum oxide metal cutting wheel Designed for metal cutting, metal abrasion, body work, metal fabrication and general repair work Used on ferrous materials Designed to be used on right angle grinders only Double bonded