A simple curve makes the bit lay flatter on the bars of the mouth. The more open the tongue area the less pressure for greater comfort. Available in Sizes 4 3/4", 5", 5 1/4", 5 1/2", 5 3/4" with a mid-thickness 16 mm thick mouthpiece. From Ponies to Derby's, our Sanft "Big-D" ring snaffle is the classic look in the Hunter Ring.