Crank handle

Hello, I recently bought an older home and am looking to replace a crank handle. It looks like the existing handle is a replacement, not the original, and as the grooves inside of it wore down, it no longer turns the gears attached to the operator to open or close the window. The arm of the operator has <32010> stamped on it but it is hard to capture in photos. If helpful, the window frame has this sticker: Series: 2510/2530 CASEMENT.
Do you sell replacement crank handles compatible with this? Thank you.