this is what my pivot bars fit in,

A home owner from Iowa says:
These are hooked to a spring that looks like a door spring.I have no idea what kind of window these are i think crestmmor, but i can't find anything that just has a spring for the block and tackle part.
Thumbnail of the uploaded file named WIN_20231108_15_58_11_Pro.jpg
Thumbnail of the uploaded file named WIN_20231108_15_58_28_Pro.jpg
Thumbnail of the uploaded file named WIN_20231108_15_58_48_Pro.jpg
Profile picture of Casey
Casey from SWISCO responded:

Hello,

Your photos look like a match to the 15-104 Caradco friction shoe. Take a look at the specifications below to confirm. Unfortunately, we do not carry replacement jamb liners or the naked springs used to support the window. If you need new jamb liners as well, your best bet would be to reach out to a local millwork for assistance. Thanks for posting! 

Profile view of 15-104
Profile view of 15-104

Face view of 15-104
Face view of 15-104

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.