Dodge High Torque Belt Sprocket, Type A1F, Series: HT250, Taper-Lock Bore Type, 1/2 to 1-1/8 in Bore Dia, 2.553 in Outside Dia, 2.607 in, 26 Grooves, 8 mm Pitch, 1.13 in Face Width, 2.953 in Flange Dia, 1108 Bushing Positive and non-slip driveNo lubrication requiredNon-stretchCorrosion resistantAbrasion resistantVirtually no backlashLong lifeLow maintenance