Dodge Timing Belt Pulley, Dyna-Sync Type KF1, Taper-Lock Bore Type, 1/2 to 1-1/8 in Bore Dia, 2.8 in Outside Dia, 2.546 in, 16 Grooves, 1/2 in Pitch, 1.32 in Face Width, 2.8 in Flange Dia, 0.06 in Hub Projection, 1108 Bushing Synchronized and no-slip transmissionNo lubrication requiredApproximately 98% efficiency can obtainedLow maintenanceVirtually no backlashConstant linear velocity8.5:1 drive ratioEasy On/Off operationFlange design standard on drive size