HTD Timing Belt Pulley Bore Diameter 1/2 in For Belt Series HTD For Belt Width 30 mm For Use With POWERHOUSE(TM) HTD(R) Belts Material Steel Maximum Bore Diameter Not Applicable Number of Teeth 24 Outside Diameter 2.756 in Pitch 8 mm Pitch Diameter 2.406 in Bore Type Plain 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 Hub Diameter 1 13/16 in