Coronet Rubber Mullen Mouth Dee Ring BitWe love the Coronet Rubber Mullen Mouth Dee Ring Bit because of the quality material and design. Intrepid Coronet Rubber Mullen Mouth Dee bit is a mild snaffle. It's D shaped rings help with lateral control of the head. It's effect is a little stronger than the Eggbutt bits. This bit features an 18 mm mouth. All bits are high quality German or stainless steel made by Coronet Dee Ring Bit Mild snaffle Rubber mouth 18mm mouth Help with lateral control