Roto window crank part

A quick learner from Auburn Ca says:
Looking for a manufacturer and part number so I can replace one on another window. The part I am looking for is the top silver one that screws to the back corner of the window and has a slide clip on the other end. Any help is appreciated.
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Casey from SWISCO responded:

Hello. This looks the ROTO 39-091 and 39-092. Unfortunately, ROTO has stopped manufacturing a lot of the hardware needed for these operators, including the crank handles, and soon even the operators themselves will be out of stock. Sorry for any inconvenience, and let us know if you have any other questions.

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