【Package Contents】2x Air Flow Splitter (3-Way), Color: Silver Tone. With black rubber plugs. 【Aquarium Air Valve Material】The aqua oxygen pump control valve is made of all-copper chrome-plated material, which is more robust and has a longer life than ordinary stainless steel. 【Size】Branch outlet valve interface size: Inner diameter approx. 4mm, Outer diameter 5mm (compatible with 4*6mm tubing) 【Independent Control】Each outlet has a valve that is controlled individually. There is no air leakage, providing a good and even airflow. 【Application】WanFengXue air valve splitter is easy to install and operate, convenient to use. The air lever valve can be attached to the aquarium tube. It can be used in aquariums, fish farms, etc. An ideal tool for fish lovers.