... )application:metal or steel 5)MO Q:5000 Depressed Center Wheel,Type 27 wheels, designed for use on angle grinders, aggressively remove ... material by grinding on the peripGrinding Wheel/Abrasive disc, grinding, Dia. 4 In., Thickness 1/4 In ... /8 In., Abrasive Material Aluminum Oxide, 24 Grit, Resin Bond Type, Max. RPM 19,108, For Use With Angle Grinder, Fast ...