Replacement knobs for casement windows

A home owner from West Chester PA says:
February 3, 2021
We need 6 of these knobs. Not sure what to measure. Hopefully you know which ones we need. They are on BiltBest windows. Thanks
Thumbnail of the uploaded file named 1E00120E-BAD0-4C6B-B69D-1F50794D8FB4.jpeg
Thumbnail of the uploaded file named 09EF9C48-081E-42E0-9A79-401C414D7B8A.jpeg
Profile picture of Bob
Bob from SWISCO responded:
February 4, 2021

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. 
T Handle, 11/32"
T Handle, 11/32"
39-102
$7.45
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 3-4 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.