Description : 1.Suitable for all head sizes. 2.The connector line runs between the tip of the chin and temporo-mandibular joint. Vented ergonomic plastic cap for maximum patient comfort. 3.For early treatment of Angle Class III. 4.With cross-bite tendency of single or all anterior teeth. 5.Must have in every orthodontic dental practice clinic Vented ergonomic plastic cap for maximum patient comfort.