Feature: 1. Can be autoclaved up to 121 degrees Celsius, easy to clean, bring you convenience. Important accessory for orthodontics. 2. During the orthodontic process, ensure that the upper and lower jaws in the patient's mouth are in a separate state. 3. Made of high quality silicone material, safe and non‑, eco‑friendly and , you can use it with confidence. 4. Light weight and in small size, easy to store and carry, suitable for dental clinics, dental hospitals, etc. 5. 3 sizes of dental bite block, can be applied to different groups of people, you can choose according to ctual situation. How to Use: Specification: Condition: 100% Brand New Item Type: Dental Bite Block Material: Silicone Characteristics: Elastic silicone material, resistant to high temperature of 121℃ Product Use: It can support the upper and lower teeth when placed in the mouth, convenient for operation. Size Chart: Type Size Purple L 39.5 x 39.5 x 20.4mm / 1.6 x 1.6 x 0.8in Blue M 34.5 x 36.5 x 17mm / 1.4 x 1.4 x 0.7in Green S 33 x 28 x 17mm / 1.3 x 1.1 x 0.7in Package List: 1 x Dental Bite Block Note: 1. Please allow slight error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.