HTD Timing Belt Pulley For Belt Series HTD For Belt Width 40 mm For Bushing Size SK For Bushing Type Quick Detachable For Use With HTD Belts Material Cast Iron Maximum Bore Diameter 2 5/8 in Minimum Bore Diameter 1/2 in Number of Teeth 28 Outside Diameter 5.56 in Pitch 14 mm Pitch Diameter 4.912 in Face Width 2.125 in Features Built for High-Torque Low-Speed Applications Outperforms Industry Standards Superb Flexibility Finish Black Oxide For Belt Trade Size HTD