PCGT Timing Belt Pulley For Belt Series Poly Chain GT Carbon For Belt Width 62 mm For Bushing Size 3020 For Bushing Type Taper Lock For Use With Poly Chain GT Carbon Belts Material Cast Iron Maximum Bore Diameter 3 in Minimum Bore Diameter 7/8 in Number of Teeth 63 Outside Diameter 6.772 in Pitch 8 mm Pitch Diameter 6.316 in Face Width 2.906 in Features Built for High-Torque Low-Speed Applications Outperforms Industry Standards Superb Flexibility Finish Black Oxide