The 1303 Fine Line Flex D-Ring Snaffle`s mouthpiece is made from flexible, food-grade PU, offering a warmer feel in the mouth even at lower temperatures. A concealed metal core ensures break-resistance and security. The anatomically shaped mouthpiece follows the natural line of the horse’s mouth, lying evenly across the tongue and bars while a slight tongue relief reduces pressure. The fixed D-shaped rings provide clear lateral guidance and prevent the bit from sliding through the mouth — ideal for horses that tend to escape over the shoulder or require more precise steering and boundary.