Shires Tom Thumb Sweet Iron Roller Link

This bit is a favorite of show jumpers, as it provides an action comparable to the American gag, but without lifting the horse's head. The shank provides leverage and keeps the horse's posture lower, while acting as a brake. The sweet iron and copper is pleasing to the horse, softening any hostile response to the bit. Furthermore, the loose copper hoops in the middle massage the tongue, encouraging the horse to stay engaged.