There are various widths of mecate reins made out of horsehair, cotton rope or braided nylon cord. We have standard 5/8″, 1/2″ holes for the rein, but will custom make your slobber strap for the size of rein you use. We offer quick change mecates if you are changing bits from horse to horse, or because your horse is ready for the next step up in the bit. Contact us by email and we will make the right size and use your design. These are a few designs and shapes of mecate slobber straps we have in stock and are ready for purchase.