I checked and confirmed over the CHAT that the motor/wheel will come with the Sprocket Wheel so I would not have to take it any where or buy a specific key for that, when for my surprise it came without the Sprocket Wheel which I probably paid more because just this part alone is $60 and I also had to pay $ 30 for the shop to move from the old wheel/motor to the new one and I informed that over the chat and I was simply ignored.