Usage Tips: OXYGEN TUBING CONNECTOR: Installing a water trap on the oxygen tube can effectively prevent the moisture in the humidification tank from spraying from the oxygen suction port through the oxygen suction pipe, making oxygen inhalation and more comfortable. UNIVERSAL WATER COLLECTOR: Oxygen Tubing Connector connected with oxygen tube to avoid spraying into nasal cavity. Versatile Use. DETACHABLE : Oxygen Tubing Connector easy to clean. Rotate to open, convenient for use. Swivel oxygen and aerosol tubing connectors REINFORCED SEALING RING: Oxygen Tubing tight and no air leakage. Made of quality material, safe friendly, stable and practical. UNIVERSAL: These Oxygen Tubing Connector can be used for standard and come with standard connectors which are compatible with all major oxygen therapy . Specification: Condition: Item Type: Oxygen Tube Water Collector Length: . 10cm / 3.9in Note: When the water in the water collector is full, you need to pour out the water to prevent the water from flowing out. Material:Plastics colour:Blue Package Contents: 8 x oxygen concentrator machine Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.