I got a key off the shelf and made the slot in the crank to fit it closely and opened the slot on the pulley so that it was the same width.

Our key was a semi circle and short. I have a square one that is mostly the full length of the pulley, but its not something I would do again cause of the fitting and measuring...................I bought a factory key to know the size of the stocker and went from there. Dont go there if you can and I suggest using the locktight BLUE also. Woody