【Durable Material】Black Plastic Mouth Opener Made From Tough, Eco-Friendly, Durable Plastic To Last Long,Plastic Material,please alcohol disinfection,THIS CANT BE CLEAN WITH AUTOCLAVE!!(Don't autoclave). 【Reliable material】these T-shape teeth retractors are made of quality plastic material, which can withstand high temperature, not easy to break, safe and reliable, and won't cause harm to your body. 【Widely applicable】this whitening dental cheek retractor is suitable for examining oral cavity, and also nice for using in dental clinics and whitening salons; Besides, it can also be applied at home as a prop to bring more fun to the family. 【Package Includes】Disposable Mouth Opener With Double-Headed T-Shape Design, Large Size:167mm x55mm, Small size:145mm x45mm. The package arrived includes: 3 x large, 3 x small. It’s ideal for extended use in dental offices. 【Easy to Use】Owing to the special design, it can be easily operated and made the patients comfortable. It can open the mouth of the patients completely during the treatment.Plastic retractor that helps give you an unobstructed view of the oral cavity.