Happy Mouth Copper Roller Mouth Loose RingWe love the Happy Mouth Copper Roller Mouth Loose Ring Bit because it possesses so many wonderful attributes that will make both you and your horse happy and ensure many smooth, enjoyable rides! 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. Bits made of copper can have a very positive effect by