The gag action of this bit provides leverage and poll pressure to the horse. Rubber mouthpiece offers a warmer and softer option compared to stainless steel. Thicker mouthpiece is softer on the corners and the bars of the mouth and pressure created by the reins is spread over a larger surface area. The soft rubber encourages the horse to chew and salivate. Encourages the horse to lift off the forehand. The single joint applies a nut cracker action which applies pressure to the tongue, the bars of the mouth and the horse's palate.