TRAP Timing Belt Pulley For Belt Series H For Belt Width 1 in For Bushing Size JA For Bushing Type Quick Detachable For Use With 0.5 in Trapezoidal Pitch Material Steel Minimum Bore Diameter 1/2 in Number of Teeth 16 Outside Diameter 2.78 in Pitch 0.5 in Pitch Diameter 2.546 in Face Width 1.312 in Features Built for High-Torque Low-Speed Applications Outperforms Industry Standards Superb Flexibility Finish Black Oxide For Belt Trade Size H Number of Flanges 2