AZDENT Metal Self-Ligating Brackets Full Sizes Movable Hook Auxiliary Hole With Buccal Tube 28pcs/Box. Proven patented sliding cover unlocking technology ensures the smooth opening and closing of the lock plate. The arch design, ultra-small appearance, and specical treatment on the four walls of the dental arch wire groove make it more comfortable for patients to wear. Reliability & Durebility our walls with optimized slot depths for improved otation control and efficient tooth movement. It is manufactured by 17-4 stainless steel injection molding technology, with high strength and long durability. The tottom is made of 80 gauge mesh base and ultra-thin desigh, makibng adhesion and adsorption force stronger than other brackets Overview Auxiliary hole: is more flexible when dealing with cases such as low canines or severely dislocated lateral teeth. It can be used with inserted crimpable hooks and can be corrected with double wires. Inserted crimpable hooks: The doctor can freely arrange according to the specific situation: no hook, 3 hooks, 345 hooks. The arc design, ultra-small appearance, and special treatment on the four walls of the dental arch wire groove make it more comfortable for patients to wear.  Reliability & Durability our walls with optimized slot depths for improved otation control and efficient tooth movement    It is manufactured by 17-4 stainless steel injection molding technology, with high strength and long durability. A proven combination of passive self-ligating brackets, high-tech archwires and minimally invasive treatment protocols with benefits that are more than just straight teeth. Whether you are new to self-ligation or an experienced user, azdent bracket is designed to provide efficient.controlled tooth movement with remarkable clinical results. Specifications Material:  Metal Package: 28pcs /kit Model:  Roth .022 Hooks on 345/MBT .022 Hooks on 345/STD .022 Hooks on 345  with movable hook+8pcs Buccal Tube