The Cherry Rollers roll in the horses mouth giving him something to play with and reducing the likelihood of the bit being held in the horse's teeth. They are constructed tightly so there is no chance of pinching. When pulling on the reins, the rollers allow the bit to move along the bars of the horse's jaws as opposed to rubbing.
Very useful for horses that:
Lose sensitivity over time
Lose concentration
Cross their jaws
The mouth piece is made from blue sweet iron, because it:
oxidizes easily encourages salivation helps bit acceptance is warm and sweet
The Polo Pelham is supplied with stubby curb hooks and a flat link polo curb chain.
The Bomber Blue includes orange rubber bit guards.