Need help to identify if you have them

Hello, thank you for posting,

Your pivot shoe resembles the 15-177 that is compatible with the Series 152 coil springs. Please review the overall style and dimensions to confirm a good fit! Let us know if you have any additional questions.

Alternate image for 15-177

If you need assistance with choosing the correct weighted coils, please provide the weight of the window sash to move forward.