The Dutch Gag uses a lever action which raises the bit in the horse's mouth and helps the rider to maintain control of the horse.  Poll pressure is also applied when the reins are placed on either of the lower rings.  Correctly, the Dutch gag should be used with two reins, one on the main snaffle ring, and a second on either of the lower two smaller rings depending how much poll pressure is required.  The Pingguo mouth bits are made from a polyurethane material, which is light, and flexible, they are suitable for use on a young horse, sensitive horses, horses just backed or those horses who are not comfortable in conventional stainless steel bits.