Made of medical-grade PVC, it is suitable for animals with throat obstruction, respiratory dysfunction, and smooth breathing. It is inserted into the trachea after tracheotomy to maintain breathing. It has the characteristics of smooth tube end design, firm tube fixation, and comfortable feeling after intubation. It adopts ISO standard interface and is directly compatible with various brands of anesthesia and breathing circuits on the market. There are 17 specifications to choose from, with inner diameters of 2.0/2.5/3.0/3.5/4.0/4.5/5.0/5.5/6.0/6.5/7.0/7.0/7.5/8.0/9.5/9.5/10/10.5/11/12/13mm.