HTD Timing Belt Pulley For Belt Series HTD For Belt Width 50 mm For Bushing Size SD For Bushing Type Quick Detachable For Use With HTD Belts Material Cast Iron Maximum Bore Diameter 2 in Minimum Bore Diameter 1/2 in Number of Teeth 44 Outside Diameter 4.764 in Pitch 8 mm Pitch Diameter 4.411 in Face Width 2.375 in Features Built for High-Torque Low-Speed Applications Outperforms Industry Standards Superb Flexibility Finish Black Oxide For Belt Trade Size HTD