The Schneiders FES Aluminum Correction With Copper Rollers is a lightweight correction that is suitable for the intermediate to advanced horse. The lightness of this bit makes it easy for even the heaviest of handed riders to use it without hurting your horse's mouth. The copper rollers help to promote salivation to promote a softer mouth and helps to keep your horse from clenching their teeth around the bit. This bit effectively provides a 'comfortable zone' to reward horses when the poll is flexed and allows each side to be worked separately applying tongue pressure at the joint.