Robart pinchless bits are designed to prevent and eliminate mouth behavior problems such as gapping, head tossing, or excessive mouth movement. Robart patented pinchless bits are snaffle style bits with an internal bushing that allows the bit to rotate in the middle. This means that each side of the bit works independently, allowing a more precise line of communication between the horse and rider. Robart patented precision bits are ported bits with a centrally conceal spring that allows each side of the bit to work independently. The internal spring allows the bit to return smoothly to the resting position when the reins are not engaged. If your horse expresses unhappiness in the mouth with head tossing or if you think your horse is extremely one sided, Robart pinchless bits may have your solution! We carry Robart's bits for english or western riding. All of our Robart's products come with the HorseLoverZ 100% satisfaction guarantee.