Herm Sprenger Dynamic RS WH Ultra Sensogan Double Jointed Eggbutt Dee Ring Bit - 16mmWe love this bit because because not only does it lay soft and even in the horse's mouth, it also has a center roller disk for horses that have more active mouths. This bit is expertly designed for optimal comfort and performance. The angled middle link and unique roller improve chewing activity and concentration, while allowing direct pressure on the tongue and lower jaw. With a fixed mouthpiece that stays steady and gentle on the corners of the