What is the primary function of rollers in a roller snaffle?

The primary function of rollers in a roller snaffle is to help the horse relax its tongue and jaw. Rollers promote a soothing effect and can encourage the horse to chew and salivate, which contributes to a more relaxed state in its mouth. This relaxation is important for communication between the horse and rider, as a relaxed horse is typically more responsive to aids and commands.

The design of rollers allows the bit to move slightly within the horse's mouth, creating a gentle pressure that can alleviate tension. This interaction can also encourage the horse to soften its jaw, which aids in fostering a good connection between the horse and the rider. By encouraging relaxation, rollers can help improve the overall comfort and acceptance of the bit, promoting better performance during riding.