Universal Clockwise Counterclockwise threaded coupler connects to a threaded hose. Exhaust Hose Coupler provide a best solution for putting my exhaust through the wall or your window. Ac air conditioner exhaust hose coupler:secure fit on tubes with no leak. Compatible with Outer diameter 150mm. Inner diameter 6 inch. Portable flex duct coupler inner: diameter does not take the thread into consideration and is the maximum diameter of a compatible tube. Using this portable connector to extend the exhaust duct no longer needs to distinguish between left-handed and right-handed. Left-handed and right-handed can be used. One left-handed and one right-handed can also be connected. User-friendly design: universal model, suitable for all with 5.9 inch diameter hoses. Colour:As shown Material:plastic Size:150mm Package Contents: 1 * Portable AC Coupler Only the above package content, other products are not included. Note: Light 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 +/- 1-3cm.