The loose ring is a standard cheekpiece. This cheekpiece has loose rings which allows the bit to move more freely in the mouth so that many horses accept this bit well. Because of the loose rings, the aid is conveyed indirectly. To prevent lips from getting pinched, it is advisable to provide the bit with bit rings. The mouthpiece with rings is a variant of the double-jointed bit. The rings in the middle stimulate the horse to play with the bit. This increases the tongue activity so that the horse will produce more saliva and the jaws can relax more.
The Sweet Iron bits are made of steel and have a recognizable blue color. Sweet Iron will rust when it comes into contact with (air) humidity, the surface rust tastes sweet and naturally stimulates the saliva production. This will cause the horse to salivate more, which in turn will encourage a better acceptance of the bit.