Martin synchronous products are manufactured in various sizes, dimensions and capacities to meet a variety of industrial requirements. This includes a wide range of loads, speeds and demanding applications such as blowers, conveyors, pumps and mixers. These sprockets give you the benefits of synchronization and timing, along with high torque capacities. The positive engagement provides very high efficiencies compared to other types of drives. Martin Synchronous Sprocket, Type AF-1 Solid, Series: MPC®, Bushed Bore, 2-5/8 in Bore, 6.031 in OD, 6.141 in Pitch Diameter, 35 Grooves, 14 mm Pitch, 2.06 in Face Width, 6.816 in Diameter Flange, QD® SK Bushing, For Use With: 0.787 in W Belts