Fitment: For Predator 212cc 196cc 6.5hp Dune Buggies Drift Trike Heavy Duty Go Kart Cart Parts Racing. Package Include:Rear Steel Sprocket Drum Brake Hub Adapter 1" Bore 1/4" Keyway with Hardware Kit. Please make sure your axle diameter is 1 inch, keyway is 1/4 inch. If you have any questions, please contact us and we will reply your information as soon as possible. If you haven't received our reply for a long time, please release the message again. Installation method: Align the keyway in the sprocket, and then fix the sprocket on it with bolts, and then install the key in the keyhole in the sprocket and axle, and then tighten the fixing screws.