Winning Tongue Plate Loose Ring Bit with Extended Plate corrects breathing problems, and stops displacement of the soft palate. The bit arms have limited travel to prevent outer ring pressure, and pain to the cheek and lips.Used in all riding disciplines.Material: Stainless Steel5" & 5-1/2" have 67mm rings, 4" has 45mm rings(Dressage riders would use the smaller rings when using a double bridle)