French mouth blocked Swivel bitComposition: German Silver (65% copper, 23% zinc, 12% nickel) a relaxing and solid alloy. Effect: this bit has a gag action that can be helpful for horses that tend to pull down on the bit. The auto blocking mechanism will make this bit action stronger if the horse takes a too strong contact. Tips: this bit can be interesting for horses that have a downward oriented balance and that need a better guidance which is given by the placement of the ring