Need replacement window crank

A home owner from Otis Ma says:
Brand name on the broken crank is: Truth
There were 2 part numbers on the arms: R30842 and 20810
User submitted photos of a window operator.
Profile picture of Paul
Paul from SWISCO responded:
Start out by looking at our 39-032 and 39-031. Carefully compare their dimensions to your own operator and see how well they line up.
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