Item Name: Hexagonal Water Pressure Valve Dental Chair Square Dental Chair Accessories. Type: Dental medical equipment accessoriesFunction: Air control of turbine hexagonal water pressure valveQuality: high quality and durablePacking: 1 pieceApplicable object: adultsPackage Included:1* piece of dental chair accessoriesnotes:Product color may vary slightly from the picture due to different lighting and screen settings.Due to different manual measurements, please allow slight size differences. Thanks! *Please make