Dodge Dyna-Sync Timing Belt Pulley, Block Type KF-1, Taper-Lock Bore Type, 7/8 to 3-1/4 in Bore Dia, 7.585 in Outside Dia, 7.639 in, 1/2 in Pitch, 3.38 in Face Width, 8.02 in Flange Dia, 0.69 in Hub Projection, 3020 Bushing, 3.38 in Overall Length, For Use With: 3 in W H-Belt Clean, compact Taper-Lock designEasy on/off operationFlange design standard on drive size