Dodge High Torque Belt Sprocket, Type A1F, Series: HT250, Taper-Lock Bore Type, 1/2 to 2-1/8 in Bore Dia, 4.357 in Outside Dia, 4.411 in, 44 Grooves, 8 mm Pitch, 2.38 in Face Width, 4.764 in Flange Dia, 2012 Bushing Positive and non-slip driveNo lubrication requiredNon-stretchCorrosion resistantAbrasion resistantVirtually no backlashLong lifeLow maintenance