Dodge HTD Belt Sprocket, Type A1F, QD Bore Type, 1/2 to 2-15/16 in Bore Dia, 8.969 in Outside Dia, 9.023 in, 90 Grooves, 8 mm Pitch, 3-3/4 in Face Width, SF Bushing Positive and non-slip driveNo lubrication requiredNon-stretchCorrosion resistantAbrasion resistantVirtually no backlashLong lifeLow maintenance