Tough1 Miniature Offset D Snaffle Bit The rings are fixed. This is a good choice when initially starting with a horse. When the rein is pulled the D ring on the opposite side of the pull applies pressure to the sides of the lip and face. 3 1/2" mouth piece. Can be used with any bridle (western or English) Features: Stainless steel with inlaid copper mouth. 2" rings in antique brown finish with silver dots. From the original Kelly Silver Star.