Dodge HTD Belt Sprocket, Type D1F, QD Bore Type, 7/8 to 3-1/2 in Bore Dia, 8.311 in Outside Dia, 8.421 in, 48 Grooves, 14 mm Pitch, 2.13 in Face Width, 8.941 in Flange Dia, E Bushing Positive and non-slip driveNo lubrication requiredNon-stretchCorrosion resistantAbrasion resistantVirtually no backlashLong lifeLow maintenance