Dodge QD Bushing, 1-3/8 in Bore Dia, 3.13 in Barrel Dia, 6.38 in Hub Dia, 3-7/8 in Bolt Circle, 4-5/8 in Flange Dia, 1/2 in Flange Thickness, 3 Bolt Holes, 3/8-16 x 2 in Screw, 11000 in-lb, 2 in Overall Length, 5/16 x 5/32 in Keyway, Ductile Iron Size SF bushingFlanged design4 deg angled taperEasy On/Off operationManufactured precisely to industry standards