Features:-Made of thick polypropylene with built-in steel ring, which has better heat resistance, wear resistance, aging resistance and longer service life-Air vent hose has good telescopic function and flexibility, can be stretched to 150cm, more convenient to use in large spaces to freely adjust the length to meet your needs.-The installation of the air conditioning hose requires no skills or tools, just fully stretch the end of the replacement exhaust hose and slowly twist counterclockwise to a position where the connector cannot rotate.-Can quickly clean the dust on the surface of the exhaust hose by simply wiping it with a wet towel.Specification:Color: whiteDiameter: 15cmLength: 150cm (expanded), 30cm (shrunk) Package Included:1x Air conditioning .