[Size] 5.9 inch is compatible with portable air conditioner with 5.9 inch inner diameter exhaust hose. NOTE: Please measure your hose size before purchasing. [Universal Counterclockwise Threaded] AC vent hose coupler is specially designed to support both counterclockwise threads. You never have to worry about installing it in the wrong direction. [Material] Made with hard plastic, so it is strong enough to protect your AC hose connection. Insulate the exhaust air away from your room. [Extend Your Exhaust Hose Anywhere] AC hose coupler is convenient to extend the exhaust hose as you like. Enjoy the coolness in the hot summer. Color: White Material: Plastic Size: 150mm Package Contents: 2 x Connector Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.