1Strong nonporous sputum aspirating tube for oral cavity. High quality ABS material, smoothly surface. 2Disposable design, more convenient to use. Can withstand high temperature. 3Can quickly remove saliva from the mouth. The suction pipe is designed to be smoothly and easy to use. 425pcs/bag including 5.8mm/ 3.8mm/ 2.5mm diameter dental suction tubes, a total of 75pcs. 53 Colors, green color suction tube diameter 5.8mm, white suction tube diameter 3.8mm, blue color suction tube diameter 2.5mm.