A ring cheek piece introduces poll pressure as well as creating leverage on the mouthpiece, the 2 1/2 Ring version is the softest out of the 3 or 4 ring alternatives as the 1/2 ring softens the leverage on the mouthpiece and poll. The Bombers Control Plate is set at 45degrees to follow the contour of the horses tongue. Best suits a horse that accepts tongue pressure. For the horse that shakes its head up when in a snaffle.