Polo Pelham Bomber Blue Swivel BitThe Polo Pelham Bomber Blue Swivel Bit cheek piece can be very strong and is recommended for horses that are hard to stop in other bits. The Swivel feature ensures that the mouthpiece stays in the correct position on the tongue and moves with the horse. The Polo Pelham Bomber Blue Swivel Bit is easily accepted in the horse's mouth, it gives tongue relief, its light, non metal and encourages salivation. The Polo Pelham Bomber Blue Swivel Bit mouthpiece