The FES D Ring Sweet Iron Snaffle Bit with Copper Roller is an ideal choice for nervous horses or those that tend to play with the bit. The copper roller in the center helps the horse to relax and accept the bit more easily. Its three-piece construction eliminates the uncomfortable nutcracker effect, providing a better fit for your horse. The bit is also designed to promote salivation and increase responsiveness due to the presence of copper. The sweet iron mouthpiece tastes sweeter once it oxidizes, enhancing your horse's acceptance of the bit. This is a reliable tool that improves the communication between you and your horse.