Bombers Loose Ring Mullen Square TwistThe Loose Ring allows for immediate release and relief from tongue and bar pressure. The bit is immediately reset to a neutral position in the horse's mouth. The Mullen is a strong bit which creates direct pressure on the tongue. Used for a strong older horse and will also bring the head down. The Square Twist will create more pressure points on the mouthpiece which will make it stronger than the Round Twist and Smooth.