TRAP Timing Belt Pulley For Belt Series L For Belt Width 1 in For Bushing Size SD For Bushing Type Quick Detachable For Use With 0.375 in Trapezoidal Pitch Material Cast Iron Minimum Bore Diameter 1/2 in Number of Teeth 72 Outside Diameter 8.564 in Pitch 0.375 in Pitch Diameter 8.594 in Face Width 1.25 in Features Built for High-Torque Low-Speed Applications Outperforms Industry Standards Superb Flexibility Finish Black Oxide For Belt Trade Size L Material Fabrication Cast