Channel balance replacement

Thanks for your photos. Based on what I see here, you have either our S380-21 or S385-21, 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 S380 and S385 balance shoes.

Sure, you just go by your old stamp. Seeing as your old marking is 20 3, I would suggest selecting our 2030 stamp option.