PCGT Timing Belt Pulley For Belt Series Poly Chain GT Carbon For Belt Width 68 mm For Bushing Size 5040 For Bushing Type Taper Lock For Use With Poly Chain GT Carbon Belts Material Cast Iron Maximum Bore Diameter 5 in Minimum Bore Diameter 2 1/2 in Number of Teeth 224 Outside Diameter 39.19 in Pitch 14 mm Pitch Diameter 39.3 in Face Width 3.328 in Features Built for High-Torque Low-Speed Applications Outperforms Industry Standards Superb Flexibility Finish Black Oxide