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. A jointed bit has one hinge point, which means less pressure on the tongue than with a eliptical mouthpiece. A jointed mouthpiece exerts pressure mainly on the bars, the side of the tongue and can also have an effect on the palate. A jointed mouthpiece is seen as a standard mouthpiece. 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.