need help identifying this part

Thanks for your photos. Based on what I see here, you have either our Series 380 or Series 385, 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.

After you decide on the Series, your next step is to measure each metal channel to determine the appropriate size in each case.

Comparison of the S380 and S385 balance shoes.