Features AVAILABLE Clockwise and Counterclockwise:This hose fitting fits both clockwise and counterclockwise hoses and easily connects to AC hoses. Easy Installation The fitting easily connects to the back of the portable air conditioner by connecting the exhaust hose, no tools required, no drilling required. FIRM CONNECTION This adapter connects the exhaust hose tightly to your air conditioner, making your air conditioner work more efficiently. 5.9 inch diameter: this connector is used for portable air conditioners with round connector and fits all exhaust hoses with 5.9 inch diameter. ABS Plastic This plug is made of high strength ABS plastic, which is sturdy, pressure resistant and durable. Specification: Item Type:Air Conditioning Exhaust Hose Coupler Material: ABS Features: adjust all exhaust hose with 5.9 inch diameter, mount them on the back of portable air conditioners with round connectors, adjust hoses clockwise and counterclockwise Package list: 1 x coupling for the exhaust hose of the air conditioner Package List 1 x Air Conditioner Exhaust Hose Coupler