French mouth Eggbutt Gag bit with roller and high portComposition: German Silver (65% copper, 23% zinc, 12% nickel) a relaxing and solid alloy. Effect: this bit has an action on the horse balance. It makes the horse rebalance and transfer its weight on the hindquarters. The larger the rings are, the stronger the gag action is. The fixed eggbutt typed rings add a slight lever action. Tips: this bit needs special cheek pieces and can be used directly with two reins, with bit loops or with four reins.