Product Description: Transparent so you can see the color of the patients lips. ■ The suction tube can be used through the holes on the side. Product Specifications: Model Number: H-323; Size: 2.4 x 1.1 x 2.0 inches (60 x 29 x 50 mm); Quantity: 1 box (20 pieces); Material: PC (polycarbonate); Opening Size: Approx. 0.6 x 1.1 inches (16 x 29 mm); Autoclavable. Manufacturer: Adachi.