Looking for replacement parts

A home owner from Wheeling, WV says:
May 18, 2019
Hello,

Looking for 1 left and 1 right for the mechanism. There is a part number on the arm that says 30866. Hoping you could help me out with finding replacement parts. Thanks!
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Bob from SWISCO responded:
May 21, 2019

Hello there. See our 39-089 and 39-090 Dyad Cranks. Compare carefully with your old operators and see if these are what you need. For a new handle, see our 39-114L. 
Window Dyad Crank, 5"
Window Dyad Crank, 5"
39-089
$43.70
Window Dyad Crank, 5"
Window Dyad Crank, 5"
39-090
$43.70
Crank Handle, 11/32"
Crank Handle, 11/32"
39-114L
$4.42
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