Operator. No Name or Makings

A quick learner from New York says:
September 22, 2021
Let me know if you have the exact product.
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Bob from SWISCO responded:
September 28, 2021

See our 39-089 or 39-187. The only difference between these two operators is the shape of the gear arm--note with the 39-089 it has a Z-shape, whereas the 39-187 has a W-shape. Compare each with your old operator and see if either match what you need. If you're uncertain, send clearer pictures of your operator's split-arm to confirm. 
Sash Dyad Crank, 5"
Sash Dyad Crank, 5"
39-187
$37.10
Window Dyad Crank, 5"
Window Dyad Crank, 5"
39-089
$43.70
Crank Handle, 11/32"
Crank Handle, 11/32"
39-114L
$4.42
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