AK99H Pulley - 9.75" H-Bushed Pulley 47-Tooth Sprocket This 41BS24 sprocket featured a

This 41BS24 sprocket featured a 1" finished bore with a key-way and two set screws

This 40SK80 sprocket is a durable

75mm pitch (center of one pin to the center of the next) which is double that of the 10B chain

Frame Opening (A): 4"

AK99H Pulley - 9.75" H-Bushed Pulley 47-Tooth Sprocket This 41BS24 sprocket featured aThis AK99H Pulley uses an H Series Bushing, is directly interchangeable with other manufacturers, is 9. 75" in diameter, and is manufactured in accordance with ARPM Standard IP20 for safe operation. With AK series pulleys you can use A Series v belts, AX cogged v belts or 3L Series v belts. What separates this AK99H pulley from the others is that it is made using a high grade 35 cast iron, is phosphate coated, painted, and balanced at the factory.