The Full Cheek Copper Roller Jointed Snaffle is ideal for young horses as the copper roller increases salivation and encourages the horse to mouth the bit. Also great for horses that grab the bit and helps prevent them taking hold. The full cheek does help to guide the horse and stops the bit being pulled through the mouth. Cottage Craft leather cheek keepers available. Copper Roller Mouthpiece encourages salivation & bit acceptanceRelaxes the mouthHelps to reinforce the turning aidsCan help to relax tense and nervous horses When used with cheek keepers fixes the bit and creates some poll pressure