Designed with sturdy structure, this connector can be used for a long time, because it has the feature of thick, anti-deformed, crack resistant, rust-proof, unbreakable, shatterproof and corrosion resistant. What this connector can offer you is that can be very easy for you to use, because it just connect to the exhaust hose and can be installed easily on the back of the portable air conditioner without tools or drilling. Made of plastic, it is lightweight and safe. There are 2 sizes you can choose, including 130mm and 150mm. It is suitable for the exhaust pipe with the diameter of 15cm. Item Name: Air Conditioner Exhaust Hose Connector Material: Plastic Features: Easy to Use, Anti-scratch, Unbreakable Size Details: Style B/G/H/I Diameter: 13cm/5.12" (Approx.) Style A/C/D/E/F Diameter: 15cm/5.91" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Air Conditioner Exhaust Hose Connector