Here's an extremely popular bit by Kerry Kelley. The mouthpiece is a medium port correction with ball hinges and copper wrapped bars. The bit has Cavalry style shanks with ball hinges. You will see this bit in a vast number of trainers' tack rooms. It is well suited for the advanced horse with a relatively straight point of pull and considerable leverage. The bit will react more quickly than say, the same mouthpiece with the shorter swept back shanks.