Stübben Hollow Mouth Snaffle is a single jointed loose ring bit with a simple snaffle, loose ring cheek piece. Loose rings are commonly selected bits for dressage horses. The sliding of the rings allows the horse to chew the bit and keeps him from tightening against it. These bits use direct pressure on the horse’s tongue and lips. The single jointed snaffle is a common bit that has a nutcracker effect on the bar and tongue of the horse.