Dodge High Torque Belt Sprocket, Type A1F, Series: HT250, Taper-Lock Bore Type, 7/8 to 3-1/4 in Bore Dia, 9.715 in Outside Dia, 9.825 in, 56 Grooves, 14 mm Pitch, 2-3/4 in Face Width, 10-3/8 in Flange Dia, 3020 Bushing Positive and non-slip driveNo lubrication requiredNon-stretchCorrosion resistantAbrasion resistantVirtually no backlashLong lifeLow maintenance