Split Timing Belt Pulley For Belt Series H For Belt Width 1 in For Bushing Size H For Bushing Type Split Taper For Use With 0.5 in Trapezoidal Pitch Material Cast Iron Maximum Bore Diameter 1 3/8 in Minimum Bore Diameter 3/8 in Number of Teeth 28 Outside Diameter 4.688 in Pitch 0.5 in Pitch Diameter 4.456 in Face Width 1.25 in Features Built for High-Torque Low-Speed Applications Outperforms Industry Standards Superb Flexibility For Belt Trade Size H Material Fabrication Cast