Amcraft vinyl windows coil balance shoe and coil spring with housing
Thanks for reaching out! Your balance shoe reminds me of the 15-177 Coil Balance Shoe. These are compatible with the 1/2" wide Series 152 Coil Balance; attached using the 33-072 screw.
You'll need to look for a stamp/marking on the coils to determine the coil weight strength. If yours do not have the stamps/markings, please see the tutorial (tagged below) for instructions on selecting the correct coil weight option.
You'll need to reuse the existing covers, if possible. If you can't, you'll need the 15-143 Coil Bushing, 15-144 Coil Bushing Cap, and 15-145 Coil Support Barrel. All three snap together to create the support. You'll need each of them for all of the coils.
