Emily from SWISCO responded:
June 27, 2023
Hello there! Thanks for reaching out to us. Our S351-34 or S390-34 with the 3340 option appears to be what you need. The important difference between these two similar-looking parts is the depth of the bottom shoe. Measure as shown below to determine the best match for your repair. Comparison of the S351 and S390 balance shoes.
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