Need casement folding handle

A landlord from Norwalk, Iowa says:
Need 2 white folding crank handles for ROTO operators for casement windows (possible 39-329 & 39-330).

What should I order?
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Emily from SWISCO responded:

Hi there!

This handle reminds me of the 39-226 which features a 5/16" pro drive hex. However, this handle isn't compatible with the 39-329 and 39-330 operators. These parts are designed to use the 39-232 which fit 11/32" spline. 

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