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