1/2 inch wide channel balances

It's tough to make out your nylon fittings in these photos, but if I'm making out these photos right then you have either our S351-16 or S390-16, depending on the depth of the bottom shoe. That's the only difference between them. I recommend measuring your shoe and referring to our dimensions to confirm the best match.

Comparison of the S351 and S390 balance shoes.