【Quick Install】Quick install, quick release, just turn off two valve, switch the connector to open position, you can simply set fish tank and the filter apart, easier cleaning. 【Several Choice】Several choice of different specifications, 12mm valve is suitable for hose with inner diameter of 12mm/0.5inch and external diameter of 16mm/0.6inch, 16mm valve is suiable for hose with inner diameter of 16mm and external diameter of 22mm/0.9inch. 【Widely Used】Suitable for fresh water and salt water, also can be used for devices such as filters, pump return lines, protein skimmers, etc. 【High Quality】Our hose valve is made of high quality plastic with special design, and long lasting product at reasonable price. 【Water Leakage Proof】Water leakage proof, rust and corrision resistant, polished enables you to grip comfortably without hurting your hands.