Features 1、Made of stainless steel material, wear resistant and durable. 2、Smooth surface does not damage the oral mucosa. 3、The design is reasonable and does not hurt your mouth 4、There are 20 different sizes in a set, each band corresponds to the shape of the teeth 5、Good accessories to help correct your teeth Specification Features: 1. Made of stainless steel material, wear resistant and durable. 2. Smooth surface does not damage the oral mucosa. 3. The design is reasonable and does not hurt your mouth 4. There are 20 different sizes in a set, each band corresponds to the shape of the teeth 5. Good accessories to help correct your teeth Specification: Condition: 100% Brand New Material: Stainless Steel Weight: Approx. 105g / 3.7oz Package List: 80pcs Buccal Tubes Package List