28" 2740

Thanks for your photos. Based on what I see here, you have either our S380-28 or S385-28, 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.

All of our balances come pre-assembled and ready to install out of the box.

Comparison of the S378, S380 and S385 balance shoes.