Features:For draining smoke, dust, high temperature gas, powder and so onThis product can be bent at 360degree and freely stretched.This product is very easy to install, no additional tools are needed, and the installation process is very convenient.Widely used in industrial ventilation, range hoods, exhaust fan, and ventilation of other electrical equipments.With high flexibility, frictions resistance, and acid corrosion resistance.brand new and high quality Specifications:Material:AluminumInner Diameter:Approx.75mm/2.95inchesLength:1.5m/3m/6m Note:1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes:1 Set Aluminum Foil Hose