The EASY-CHANGE Complete Kit is designed to be used with saddles featuring the EASY-CHANGE Gullet System. It contains an EASY-CHANGE gullet gauge and all five gullet plate options: narrow, medium/narrow, medium/wide, wide and extra wide. (Note: a medium gullet plate is fitted as standard in all new saddles.) This complete kit also includes an instruction booklet, two spare head screws, two spare T-nuts and five spare gullet screws. The EASY-CHANGE Gullet System is exclusive to Bates Saddles and Wintec Saddles. It offers riders a means of altering the width of the Elastiflex tree within the saddles. The Elastiflex tree is supported by the rigid gullet at the head, and it possesses true lateral flexion to work with your horse’s muscles. The tree width is determined by the size of gullet plate fitted between the tree points. The gullet plate governs the width of the tree from the twist to the tree points. Genuine EASY-CHANGE gullet plates are engineered to be completely rigid, ensuring they cannot spread or change shape under normal usage. Gullet plates are color-coded by size and will remain true to their size throughout their life. Only genuine EASY-CHANGE gullet plates are accredited for use in saddles featuring EASY-CHANGE Gullet System. The use of non-genuine component parts will void any manufacturer warranty. A Dover Saddlery brand product. Dover Saddlery only offers quality products that they would use on their own horses, so you can have complete confidence in your every purchase. The Dover tradition that began in 1975 continues today - using their understanding of horses and the sport to better serve the equestrian customer.