Jump'In French mouth Eggbutt bit with rollersComposition: Stainless Steel and German Silver (65% copper, 23% zinc, 12% nickel, a relaxing and solid alloy). Effect: This is a very simple bit. The rings don't slide, so the action is more direct. The rollers on the cannons make the horse constantly work on the bit and not catch it or be fixed on it. Tips: This bit is great for horses that have been worked with bits that were too strong for them. It can help them gain confidence in bits again.