Teeth: 12TBore Size: 3/4 inchCompatible Chain Size: #35Engagement Speed: 2000??100 RPMHorse Power: Up to 6.5 HPKeyway: 3/16 inchOutside Diameter: 4.22 inch This Clutch Will Fit 2 – 6.5 HP Engines Honda GC160, GC190, GX120, GX140, GX160, GX200Also will fit Briggs & Stratton and 2 – 6.5 HP With 3/4″ ShaftAlso Will Fit Tecumseh Engines 2 – 6.5 HP With 3/4″ ShaftAnd Any Other Engines With 3/4 Crank Shaft and 3/16″ Key Way. Chain: 35# 116 LinksRear Sprocket: 58T 29mm , 65T 37mm depend on what your chooseMotor Sprocket: 9T 11t depend on what your choose