Shires Hollow Mouth 2-Ring Gag BitWe love this Shires Hollow Mouth 2 Ring Gag Bit because of its durable materials and design! The hollow mouth makes this bit lighter and softer, while the two ring gag offers leverage options to increase poll pressure. 2 Ring Gag Bit Offers leverage options Hollow mouth lighter and softer Sizes: 4 1 2" 5" 5 1 2" 6" **Due to the contagious nature of the equine disease EHV 1 and following biosecurity measure guidelines suggested by the American