Camco's Easy Slip RV Internal Sewer Hose Coupler allows you to quickly connect two sewer hoses together. The hoses are internally connected for an odor-tight seal, adding as much length as necessary to your sewer hose assembly. This product works with all 3-inch sewer hoses and slip over fittings. Tapered ends allow your sewer hoses to slide on easily. Once in place, the joined hoses are secured using built-in, easy-to-rotate Spin-Lock rings. No clamps or tools are needed for installation. When not in use, the coupler stores with your sewer hose inside a standard 4-inch bumper. This product measures 5 ¾-inches (tall) x 4-inches (wide) x 3 ¼-inches (deep).