Toklat Loose Ring Hollow Mouth BitWe love the Loose Ring Hollow Mouth because of the high quality and durability of the Bit. Loose Ring 19mm Hollow Mouth 3" Rings Size: 5" 5 1 4" 5 1 2" **Due to the contagious nature of the equine disease EHV 1, and per biosecurity measure guidelines suggested by the American Association of Equine Practitioners, The Farm House will no longer accept any returns on bits or bit accessories.**