AZDENT Dental Orthodontic Brackets passive Self Ligating ROTH 0. 022 345 Hook With Buccal Tubes. Model: Roth 0.022″ passive Self Ligating Brackets,3 4 5 With Hook. Roth 0.022″ 1st Molar Buccal Tube. •Rhomboid-shaped bracket and pad, and vertical scribe line guide precision.