Alside Excalibur Balance shoe block

Thanks for reaching out! Your pivot shoe resembles our 15-177. Carefully compare the measurements from the diagram below to your original pivot shoe to confirm that this is the right fit.

Alternate image for 15-177

This shoe is compatible with the Series 152 Coil Balance Spring. To confirm which balance spring(s) you need for your window, you'll need to look for any stamps on the metal coil that may indicate the spring strength.