Model: Roth 0.022″ passive Self Ligating Brackets,3 4 5 With Hook. Type: MIM Monoblock. Roth 0.022″ 1st Molar Buccal Tube. •Rhomboid-shaped bracket and pad, and vertical scribe line guide precision. The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies.