The Roper/Barrel Style German Martingale is designed to teach the horse to give to bit pressure, flex at the poll, and maintain proper vertical and lateral body pressure. 3 easy adjustment points to accommodate all types of horses and training maneuvers. Tip: the leather piece with the snap should pass through the bit ring and snap to one of the 3 adjustment dees on the reins. Includes adjustable barrel reins. Constructed with premium Hermann Oak harness leather.