1.highly flexible 2.lower price 3.prompt delivery Apply to low/medium pressure A/C system -Industrial dust removal -Widely used in electronic factory, bathroom for air exhausting Features:Material: PVC, spring steel ringWorking temperature: -10 to +80 centigradeWind speed: 25 m/sDiameter range: 2.5 inch to 24 inchStandard Length: 10 metersColor: Black, White,etc. Flexible PVC pipe