Need metal folding replacement crank

A quick learner from Colorado says:
I just replaced my truth handles with
Truth Folding Handle for Casement Operator w/ White Finish, Truth 11329.32 from another on-line supplier.

Unfortunately these have broken in less than two months because the part that goes around the splines (I think that is what they are called) is plastic. What material is yours made of? I would like to find a folding handle that fits 5/16" 12 splines that is made of 100% metal.

Profile picture of Tom
Tom from SWISCO responded:
Thanks for posting! The spline of our 39-205 is made of metal.
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