Features: Made of high-quality PVC material, soft, transparent, non-toxic, with no irritating odor, safe and comfortable Designed to help prevent carbon dioxide retention Oxygen connector compatible with oxygen tubing and ventilator systems Lightweight elastic strap for effective and comfortable use Three-way oxygen tubing suitable for compressed air nebulizers, commonly used in hospitals, clinics, homes, and other settings where liquid medication is administered via雾化 (corrected to: aerosol therapy) Specifications: Material: PVC Function: Negative pressure drainage (suction) connection Allows two people to inhale oxygen simultaneously Application: For extraction and collection of body fluids Size: As shown in the picture Color: Green/White (optional) Quantity: 1 set Note: No retail packaging included Please allow 0–1 cm error due to manual measurement; ensure you are comfortable with this before purchasing Due to differences in monitor displays, the image may not reflect the actual color of the item. Thank you Package includes: 1 x Tube (other accessories shown in the image are not included)