The product description: Advanced production techniques on Bracket ，Accurate product size, ultra-high precision, and smooth surface greatly reduce oral mucosal irritation. makes it easier for doctors to operate, and the minibracket is comfortable for patients to wear. The clear central axis, precise torque, angulations and slot size. Removable color coded ID dot, for easy brackets selction. Adopting advanced MIM production technology, high-quality medical stainless steel materials, fine processing, and precision molds to ensure product consistency. The bracket and base together, one Monoblock, Solid stainless steel single-unit construction eliminate sweld spots and is much stronger than welded attachments. Integral pylon base increase bond strength. Introduce: Model: Mini Roth 0.022" 345 Hooks Mini MBT 0.022" 345 Hooks Mini Roth 0.018" 345 Hooks Use: For orthodontic dental treatment Material: Metal 20 pcs per Pack /////////////// //// //// //// //// //// //// //// //// //// //// //// //// //// //// //// //// //// //// //// //// //// //// //// //// //// //// //// //// //// //// //// //// //// //// //// //// //// Introduction: 1.10pcs/pack, 2.English Package 3.Used For Dental orthodontic treatment 4.Material: Super Elastic NITI 5.Type: Round 6.CE approved We have sizes of 0.012 upper; 0.012 lower 0.014 upper; 0.014 lower 0.016 upper; 0.016 lower 0.018 upper; 0.018 lower 0.020 upper; 0.020 lower one pack just include one size, not mixed pack 1 pack