Casement window crank

Hello,

We do not have a replacement for the built-in folding handle but the 39-375 comes to mind. Note that the handle attaches to an 11/32" diameter operator spline. Review the measurements below to determine if this could work for your repair. If the specifications don't match, please get back to us with additional photos of your operator with the window open so that the arms that move the sash are fully visible. Thanks for posting! 

Width measurement

View of the handle extended

Side view