Product description, Product name: Opener, Material: Plastic, Color: Blue/Transparent, Quantity: 1 piece, Model: Suitable for front/rear teeth, Features: High quality, Application: For dentistry, Advantages: 1. Specially designed for rear teeth | | 2. Upper and low bow opening design, easy to operate | | 3. Use the mouth holder to easily avoid patient fatigue and allow patients to enjoy easy treatment | | 4. Progressive tongue movement, so that no harm will occur during the entire treatment process