nesting handle

A home owner from Indiana says:
October 7, 2017
Hello - I have the Truth Entrygard hardware on my Marvin window with a regular handle that I would like to replace with a nesting handle. Would Product 39-107FK do the job? It says that it fits a 11/32" spline but I'm not sure what that is.

Thanks!
handle operator
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Tom from SWISCO responded:
October 12, 2017
Hey there! You can figure the spline size by measuring the diameter of the hole in the handle. That said, I think our 39-107FK could work for you.
Truth Folding Handle And Cover Kit
Truth Folding Handle And Cover Kit
39-107FK
$15.45
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