Classic EquineSherry Cervi Signature CollectionSquare SnaffleD-RingsStainless SteelCopper Diamond DesignBBIT4DDR29SSSherry Cervi's Signature Collection bits have and excellent feel for quick pickup and release. Cervi's Diamond D-Ring snaffle with square bars has a stainless-steel mouthpiece and is designed to help soften your horse's mouth and build sensitivity. This model features copper diamonds.