"Fitment For predator 212cc GX160 GX200 196cc 6.5hp Dune Buggies Drift Trike Heavy Duty Go Kart Cart. Package include :1 x sprocket hub 1"" Bore 1/4"" keyway,1 x keyway ,4 x Screw,4 x nut. Easier installation：align the keyway， fix the sprocket with bolts，fix the chain groove on the keyway and shaft of the sprocket，tighten the screws. The use of high-quality steel, more durable, smooth surface, metallic luster. Please confirm the size before purchasing. If you have any questions about the product, please contact us."