Replacement knobs for casement windows

Home Owner from West Chester PA
We need 6 of these knobs. Not sure what to measure. Hopefully you know which ones we need. They are on BiltBest windows. Thanks
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Bob
Bob from SWISCO
SWISCO
Expert

It's a bit tough to tell from these photos, but if the spline is 11/32" in diameter, then you should be able to use our 39-102 T Handle. Let me know if you have any other questions. 

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