PGGT Timing Belt Pulley For Belt Series PowerGrip GT For Belt Width 40 mm For Bushing Size 3020 For Bushing Type Taper Lock For Use With PowerGrip GT2 Pitches PowerGrip GT3 Pitches Material Cast Iron Maximum Bore Diameter 3 in Minimum Bore Diameter 7/8 in Number of Teeth 68 Outside Diameter 12.5 in Pitch 14 mm Pitch Diameter 11.93 in Face Width 2.13 in Features Built for High-Torque Low-Speed Applications Outperforms Industry Standards Superb Flexibility Finish Black Oxide