Window parts

The piece missing from the shoe is the metal cam. This isn't sold separately but it does come with the shoe. 

The shoe you have is the 15-177 Coil Balance Shoe, which is used with the Series 152 Coil Balance. The balance springs are attached to the shoe using the 33-072 screw. There should be a stamp/marking on the metal that indicates the exact coil you need. See the video tutorial below for a more detailed explanation.

If you need covers/supports for the coils, we suggest the 15-143 Coil Bushing, 15-144 Coil Bushing Cap, and 15-145 Coil Support Barrel.

Alternate image for 15-177