The Korsteel Copper Mouth Dee Ring Bit is a simple single jointed Dee Ring Snaffle which is a good choice for horses who may be hard mouthed or have a hard time accepting the bit. Copper encourages salivation which can in turn help the horse to better accept the bit. The classic single jointed snaffle applies pressure to the sides of the tongue, bars and lips while the Dee Ring cheeks help to keep the bit stable and can aid in turning the horse.