Coronet Hard Rubber Mullen Mouth Gag BitWe love the Coronet Hard Rubber Mullen Mouth Gag Bit because of its quality materials and design! The gag bit gives precise action to your horse's balance. It obliges the horse to lift his whole front end and therefore puts his weight on the back end. It is generally used on horses that are quite heavy and puts much weight on the shoulders. Special cheek straps are used, made of either Leather or nylon. All bits are high quality German or stainless