The Tackaberry buckle is made so that you can hook the ring of a girth over the bottom lip, allowing for quick release of the girth when unsaddling. The leather safe helps protect the horse’s side when the girth is released.Hardware sizes are intended to indicate the maximum strap size to be used. As a general rule, measurements are taken from inside-edge to inside-edge, on the side the strap would pass through. Stainless Steel is a strong metal that does not readily corrode, rust or stain with ordinary water. Its strength, durability and shiny grey-white appearance make it a popular choice.