The AJ Tack Double Rein Tom Thumb 3 Piece Copper Roller Bit is a versatile and effective tool for enhancing communication with your horse. Featuring a 5" stainless steel mouthpiece with a copper roller, this bit encourages salivation and responsiveness while keeping your horse engaged. The 6 1⁄2" stainless steel double rein cheeks provide moderate leverage and allow for versatile rein setups, making it ideal for riders aiming to refine their connection and control. Features Three-Piece Mouthpiece: 5" stainless steel mouth with a copper roller promotes salivation and responsiveness. Double Rein Cheeks: 6 1⁄2" stainless steel cheeks accommodate multiple rein setups for versatile use. Durable Construction: Made from rust-resistant stainless steel for long-lasting performance. Copper Roller: Encourages engagement and relaxation, supporting effective communication. Versatile Design: Suitable for riders working on precision and refinement.