What Crank Handle Works with 39-157?

A home owner from El Cerrito, CA says:
I just purchased your 39-157 4" crank extension, 11/32". I attached it to the existing hardware, no problem, but the original handle does not fit on the extension. Which handle should I order to go with your extension?

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Tom from SWISCO responded:
Thanks for posting. Since the 39-157 has a spline size of 11/32", I would go with our 39-114L. See what you think.
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