AJR Dog Bone Baby Pelham BitThis is a mobile bit that discourages fixing and leaning on the forehand. This bit is slightly thinner in diameter which also helps to apply more direct pressure. The double jointed mouthpiece avoids the nutcracker action of a single joint. This bit does not include a curb chain. Mobile bit that discourages fixing and leaning on the forehand Slightly thinner in diameter to help apply more direct pressure Double jointed mouthpiece avoids the nutcracker