Equine - Reins
I sent an earlier request, but now I think I have it narrowed down based on your model number scheme.

5/8" Wide - Super Heavy - B10 or B30 - Beta 560 - BR561, 563, or 565

If you have them available then samples of any of the following would be great:

B10SH058BR561
B10SH058BR563
B10SH058BR565
B30SH058BR561
B30SH058BR563
B30SH058BR565

Thank you.