Dodge High Torque Belt Sprocket, Type A1F, Series: HT250, Taper-Lock Bore Type, 1/2 to 2-1/8 in Bore Dia, 5.56 in Outside Dia, 5.614 in, 56 Grooves, 8 mm Pitch, 1-1/2 in Face Width, 5.945 in Flange Dia, 2012 Bushing Positive and non-slip driveNo lubrication requiredNon-stretchCorrosion resistantAbrasion resistantVirtually no backlashLong lifeLow maintenance