Feature:1. Oxygen generator humidifier cup adapter tube for connecting oxygen concentrator to humidifier.2. One end of the humidifier cup adapter tube is provided with a threaded nut for easy placing in the humidifier bottle.3. Simple and convenient operation, just connect the ribbed end of the connecting pipe to the oxygen outlet port of the oxygen concentrator.4. 90 Degrees connection tube special designed for 5L oxygen generator, directly replacement use.5. Wonderful replacement for the old or broken one, directly fitment, reliable and durable to use.Specification:Item Type: Humidifier Tubing ConnectorMaterial: Plastic Application: Straight humidifier tubing connector suitable for 5L oxygen generator .Package List:1 x Humidifier Tubing Connector