Feature:1. Transparent C‑shape mouth opener, helps provide you an unobstructed view of the oral cavity for dental therapy.2. Made of high quality ABS material, no‑toxic and harmless, safe and reliable to use.3. Prevents the tongue from moving to avoid injury during the entire treatment process, perfect for professional use.4. Simple operation and easy to keep the mouth open and hands available for oral inspection and treatment.5. Including 20pcs of the package, perfect for using in dental clinics and teeth whitening salonsSpecification:Item Type: Cheek Retractor Material: ABS Package List:20 x Cheek Retractor