PGGT Timing Belt Pulley For Belt Series PowerGrip GT For Belt Width 85 mm For Bushing Size 3535 For Bushing Type Taper Lock For Use With PowerGrip GT2 Pitches PowerGrip GT3 Pitches Material Cast Iron Maximum Bore Diameter 3 1/2 in Minimum Bore Diameter 1 3/16 in Number of Teeth 52 Outside Diameter 9.687 in Pitch 14 mm Pitch Diameter 9.123 in Face Width 4 in Features Built for High-Torque Low-Speed Applications Outperforms Industry Standards Superb Flexibility Finish Black Oxide