Window crank replacement

A quick learner says:
February 20, 2021
When we remodeled our kitchen, we were unable to install the normal crank handle for our Milguard window. The contractor installed an extender and then a round handle to allow us to turn the crank (See photo). This handle now needs to be replaced and I have not been able to find a replacement in a hardware store or websearch. I do not think that I need to replace the extender. Can you help?
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Tom from SWISCO responded:
February 22, 2021

We do indeed sell these parts! See our 39-115 crank hand knob and the 39-337 extender, if you did end up needing it later on.
Crank Hand Knob, 11/32"
Crank Hand Knob, 11/32"
39-115
$17.24
2" Crank Handle Extension, 11/32"
2" Crank Handle Extension, 11/32"
39-337
$25.25
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