This listing is for the sprocket gear the fits on the back of 2" capsule machine coin mechs. Common machines that use this part are A&A Global 2001, LYPC Big Pro, Rhino Super Pro 2, Ashland, Richland, and many more similar capsule machines.

Over time, used handle shafts can warp or get burrs.  If the sprocket fits too tightly or won't slide over, simply file or use a dremel tool on the end of the shaft until it slides on.

The final picture is posted to help you confirm your mech is similar and to show where it goes.