Bob from SWISCO responded:
January 20, 2022
See our S351-21 or S390-21. The only difference between these two balances is the depth of the bottom nylon shoe, or the 'heel-to-toe' measurement, so compare both with your old hardware to see what matches best. See the image below for reference. For the stamp option choose 2030. Comparison of the S351 and S390 balance shoes.
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