Dotco 136GLR-115A-D3T45 .8hp right angle grinder w/ heavy duty head for type 27 depressed center wheel. Steel housing, 4.5." type 1 wheel capacity, 4.5." wheel guard. RPM=11,500, arbor spindle size=3/8-24, 1/4" air inlet, rear exhaust, weight-=3.8lbs.. PN 136GLR-115A-D3T45