Excellent bit acceptance can be achieved with the Happy Mouth® Contour Copper Roller Flat Eggbutt Bit. The combination of Apple scented, space age polymer mouthpiece and pure copper center roller makes this a ‘must have’ for any training barn! Pure copper is a soft, warm metal. By using 99.9% pure copper in the center of the mouthpiece, bit acceptance is improved. The taste of copper encourages horses to salivate and keep a moist mouth. The curved shaped mouthpiece better fits the contours of the horse’s mouth.