Coronet products are made of the finest metals and materials and are held to the highest standards of quality control. Every piece is polished and inspected before leaving the factory. Close attention is paid to detail to make sure that all items will pass the criteria for breed and disciple regulations where appropriate.... (read more) Ported mouthpiece with copper roller encourages horse to salivate. Helps keep mouth soft and moist. Great bit for young or nervous horses. If your horse does not like the action of a snaffle they will like this one! This bit has 6" cheeks and a 13 mm mouth.