Stripped Crank Gears

A quick learner from Utah says:
It looks like I could replace just the little gear gasket in the crank handle, but I am unable to find the part. Please help.
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Casey from SWISCO responded:

Hello,

We do not sell the insert separately but if the worm gear the handle installs on has a diameter of 11/32", you may be able to use our 39-205 folding handle. Take a look and see how it compares to yours. Thank you! 

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