Advanced casting technology allows for not only increased strength, but also the freedom of design to produce smaller precision tubes toincrease clinical efficiency and patient comfort. Both occlusal interference and gingival impingement are reduced, and hygiene is improved. Allconvertible tubes incorporate a true “twin” bracket tie wing design to aid in ligation. Our combination tubes also incorporate a distinctive tiewing design for secure ligation following archwire slot conversion, and are offset from the gingival to avoid tissue impingement.