Emily from SWISCO responded:
October 13, 2022
Hello! It looks like you could have either our S380-26 or S385-26 channel balance. The only difference between these two parts is the size of the bottom shoe. With that said, you'll need to measure as shown in the image below to determine the best match. Based on your 25 4 stamp, you'd want the 2540 strength option. And yes! We always recommend replacing your balances in pairs. Comparison of the S380 and S385 balance shoes.
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