Mishiner 20pcs Oral Cheek Lip Mouth Retractor Opener for Adult Kid Fun Game Dental Teeth Whitening (10 Adults + 10 Kids) (Blue) For dental teeth whitening or Fun Game Price for 20pcs (10 Adult + 10 kid) Made of High Quality Clear Plastic and reusable Keeps the mouth open and hands available for oral inspection and treatment Compatible with sterilization and the autoclave