HTD Timing Belt Pulley For Belt Series HTD For Belt Width 30 mm For Bushing Size SH For Bushing Type Quick Detachable For Use With HTD Belts Material Cast Iron Maximum Bore Diameter 1 5/8 in Minimum Bore Diameter 1/2 in Number of Teeth 40 Outside Diameter 4.331 in Pitch 8 mm Pitch Diameter 4.01 in Face Width 1.5 in Features Built for High-Torque Low-Speed Applications Outperforms Industry Standards Superb Flexibility Finish Black Oxide For Belt Trade Size HTD