Harry's Horse sweet iron jointed eggbut bradoon 14mm

Bradoons are always used in combination with a weymouth bit. It's mainly used in the higher dressage classes and only suitable for very experiencend riders. The rings of a bradoon are smaller than rings of a normal bit. The reason for the smaller rings is to create enough space for the weymouth. You'll need a double bridle to be able to ride with a weymouth and bradoon. This bradoon has a jointed mouth piece,  When pressure is placed on the reins the mouthpiece breaks at the join. This creates an angle which gives the tongue more room than with a double jointed mouth piece.

The eggbut:

The eggbut is a common multi-dicipline style of  cheekpiece. It comes in different vaiarities, like jointed, double jointed and straight. It has a fixed mouth piece wich prevents pinching  the edges of the horse mouth as is seen by a loose ring. It also offers more moderate lateral control. 

The Harry's Horse sweet iron bit:

Sweet Iron is designed to oxidize. Sweet Iron is made from black iron and copper, creating a metal that promotes moisture in the horse's mouth. The black iron and copper compound slowly oxidises and rusts. Slow-acting and harmless to horses, the oxidation has a sweet taste that horses like and which encourages salivation. This metal will almost always discolour. The cheeks and all the joints of the bits are made from stainless steel and will not rust or bind.