I remixed this to fit a 12 spline window crank. I made the center around the spines a little thicker to match the one that came off and made a center hole in it to screw it to the crank. This works on my 1970 vintage camper. It is a Tops Traveler. I don't know what spine would be on a more popular Vintage Camper like a Shasta but you can let me know.