Bombers 3 Ring Control Plate 45A Ring cheek piece introduces poll pressure as well creating leverage on the mouthpiece. The 3 Ring is our most popular version. The Bombers Control Plate is set at 45 to follow the contour of the horses tongue. Consequently, a horse who uses his tongue as a means of pushing against the bit and therefore taking control, will draw back and tuck his chin in, coming back to a better point of control.