Dental Q Pro Self-Ligating Brackets Roth MBT Standard/Low/High Torque .022 Hooks On 345 With Buccal Tubes 28pcs/BoxDental Q Pro Self Ligating Brackets Roth MBT Standard Low High Torque . 022 Hooks On 345 With Buccal Tubes 28pcs Box. The T shaped design ensures stable traction, precise 3D control. Small circular dot at the center facilitates the use of probes by doctors in clinical practice. Circular design appearance to avoid food residue and ensure oral hygiene. Innovative low friction self ligating. Corrective force applied closer to the center of resistance