Parts needed including rivits please

Hello,

With this combination of attachments, you could have either an S380 or S385 channel balance. You’ll need to measure as shown below. The Series 380 has a 1" bottom attachment, and the Series 385 has a 1-3/32" attachment. I can't quite make ou the stamp on your metal channel but I believe that you'll need 1520 spring strength options for your replacement balances. Double-check the stamp code on your balance to confirm. 

Thank you and let us know if you have any other questions or concerns.

Comparison of the S378, S380 and S385 balance shoes.