Happy Mouth Contour Copper Roller Eggbutt GagExcellent bit acceptance can be achieved by this combination of Apple scented space age polymer mouthpiece and pure copper center roller. Pure copper is a soft, warm metal. By using 99. 9% pure copper in the center of the mouthpiece, bit acceptance is improved. The curved shaped mouthpiece better fits the contours of the horse's mouth. Happy Mouth Bits offer no guarantees in the event of biting on the mouthpiece. Happy Mouth bits with bite marks are