HTD Timing Belt Pulley Bore Diameter 1/2 in For Belt Series HTD For Belt Width 15 mm For Use With POWERHOUSE(TM) HTD(R) Belts Material Steel Maximum Bore Diameter Not Applicable Number of Teeth 32 Outside Diameter 2.125 in Pitch 5 mm Pitch Diameter 2.005 in Bore Type Plain Face Width 0.844 in Features Built for High-Torque Low-Speed Applications Outperforms Industry Standards Superb Flexibility Finish Black Oxide For Belt Trade Size HTD Hub Diameter 27/64 in