Used for treatment of maxillary insufficiencies, prognathism of the mandible and cleft palate. Reverse orthopaedic pull between maxilla and mandible facilitates orthodontic treatment afterwards. Made of stainless steel wire and non toxic acrylic, it can be adaptable to perform any individual size requirement with vertical or horizontal adjustment. All attachments are locked by set screws in metal housings. Face masks with zygomatic holds feature an adjustable blue strap band.