Gag Bits Or Elevator Bits by Coronet.
Gag Bits Seem to generate confusion among novice riders. Generally you see gag bits used in polo, hunter and eventing. The bits aid with strong going horses and horses that tend to lean on the bit. The mouth pieces can be snaffle or mullen which are usually stainless steel or rubber. Gag bits work on the lips, bars and poll at the same time. English Gag bits in this category are fitted to a bridle that has shortened cheeks because gag cheeks that are made of rope or leather attach to the bridle crown and go through the cheeks and attach to the reins. When reins are pulled pressure tends to raise the horses head.