Dodge High Torque Belt Sprocket, Type A2F, Series: HT250, Taper-Lock Bore Type, 7/8 to 3-1/4 in Bore Dia, 7.966 in Outside Dia, 8.02 in, 80 Grooves, 8 mm Pitch, 3-3/4 in Face Width, 8.42 in Flange Dia, 3020 Bushing Positive and non-slip driveNo lubrication requiredNon-stretchCorrosion resistantAbrasion resistantVirtually no backlashLong lifeLow maintenance