Abstract: The invention relates to the restriction of the angular displacement of a bit for animals so that it is comfortable in the animal's mouth and facilitates training and control. The bit consists of a central section, end sections and bridle-irons, which ar joined by means of ball-joints of such a design and size as to restrict the angular displacement of the bit. The bit according to this invention is intended to have restricted angular displacement in the animal's month so as to prevent it from rising too high and injuring the animal's palate. It is also intended to avoid excessive pinching of the corners of the animal's mouth and its jaw, and to restrict the resistance of the ball joints so that it is easy for the animal to move its tongue and teeth relative to the bit without encountering resistance, and to prevent the animal from passing its tongue over the bit.