3M™ Unitek™ Gemini SL Self-Ligating Brackets bring a simple solution to passive self-ligation, with an advanced Nitinol ligating mechanism that opens and closes with low resistance and without special techniques or instruments. The mechanism offers elasticity and high resistance to fatigue, and the passive closure does not touch round or rectangular archwires for reduced friction during sliding mechanics. Because the bracket design allows for either passive or active ligation depending on treatment need, and because there is space under the tie-wing area for conventional or chain elastics, the Gemini SL system gives clinicians flexibility across treatment phases. Built from 17-4 PH stainless steel with an 80-gauge mesh base, rhomboid shape for efficient positioning, torque-in-base for precision control, and rounded corners for patient comfort.