Series Roth and M.B.T Self Ligating Bracket kits (20 ea) 5×5 upper and lower arch with or without hooks. Metal injected molded from 17-4 stainless. Ample tie wings for ligatures. Brackets feature active spring clips engaging wire, making sure wire is seated fully in slot to effect movement with small wires in early treatment. Reduced treatment time with longer patient visit intervals.