Needing replacement crank mechanism

A professional from Buffalo, NY says:
August 17, 2020
We purchased 77 casement windows from Beechworth. Unfortunately, 4 are not working. When we turn the crank, nothing happens - nothing moves and window doesn't open. It appears that the mechanism is stripped. We need to purchase at least 4 of these (2 left and 2 right). Beechwrth went out of business about 2 months after we purchased the windows, so they are no help at all. Hoping you're able to assist. The hardware appears to me manufactured by Truth.
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Casey from SWISCO responded:
August 21, 2020

Hello,

Take a look at our 39-220B and 39-221B operators. There appears to be a match to the operator in your photos but make sure to compare the dimensions on our product pages to your hardware to confirm. Thanks for posting! 
Encore Dyad Sill Mount Operator, LH
Encore Dyad Sill Mount Operator, LH
39-220B
$24.95
Truth Snap-Stud Bracket
Truth Snap-Stud Bracket
39-546
$3.22
Encore Dyad Sill Mount Operator, RH
Encore Dyad Sill Mount Operator, RH
39-221B
$24.95
Truth Snap-Stud Bracket
Truth Snap-Stud Bracket
39-545
$3.22
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