30 piece opener, medical grade material, 100% BPA free, transparent, type C, medium size, suitable for adults. Autoclave to 134 Easy to use, keep your mouth open, and your hands can be used for oral examination and treatment. It is suitable for home dental care, tooth whitening salon, dental office, oral examination, teeth, tongue, pharynx, tonsillar stones, etc. It will not stretch the lips or feel uncomfortable. Durable, recyclable and flexible enough not to deform or break even after twisting, bending, stretching and folding. Lip opener: a party tool for the Toothguard Challenge, which can play games loudly and watch the mouth of the teeth. 30 bags, enough for a wonderful family game. Help you save money. Packing list: 30 openers Due to the difference of different monitors, the pictures may not reflect the actual color of the product. Due to manual measurement, please allow minor dimensional errors.