balance system for tilt windows

Hello! Looks like you have the old Simonton brand balance assembly. Simonton doesn't sell this anymore but we have a more modern assembly that works just as well (actually even better, in my opinion).

You can get more information from the video below, which explains exactly what you need to buy and exactly how to install those parts in your window. I'm happy to answer any follow-up questions you may have, though, just let me know!