What distinguishes a Dr. Bristol snaffle from a French link snaffle?

The Dr. Bristol snaffle is distinguished from a French link snaffle primarily by the design of its mouthpiece. The Dr. Bristol features a flat link that is set at a slight angle in the center, which allows for more direct pressure on the horse's tongue when the reins are pulled. This design can enhance communication and sensitivity with the horse, making it suitable for specific training purposes.

In contrast, the French link snaffle has a more traditional three-piece construction where the center link is rounded, providing a softer bit that distributes pressure more evenly across the tongue and bars of the horse’s mouth. This configuration typically results in less direct pressure being applied, making it a gentler option for many horses.

The other features mentioned, such as whether a bit is single jointed, has nutcracker action, or is primarily used for young horses, do not accurately define the unique characteristics of the Dr. Bristol snaffle in comparison to the French link snaffle.