Feature:<br /> <br />\u25cfAir filter supplies clean air to aquarium.<br />\u25cfAdjustable and accurate air control.<br />\u25cfThe flow of the air pump can from one into four ways.<br />\u25cfThe outlet air standard size for air line tubing aquarium (4 mm).<br />\u25cfFits all standard aquariums.<br />\u25cfSuitable for fresh or saltwater.<br />\u25cfBuilt-in anti-siphon check valve protects air pump against water damage.<br /><br />Product Attributes: <br /><br />Material: Plastic<br />Color: Transparent and Black<br />Quantity: 1 Pcs<br /><br />Package Include:<br /><br />1 x Four Ways Filter Air Check Valve<br /> <br />Note:<br /><br />1.Due to the light and screen difference, the item's color may be slightly different from the pictures. Please understand. Make sure you don't mind before you bid.<br />2.Please allow 1-5mm differences due to manual measurement.