Brand new with high quality.<br />Put in the airline tube between air pump and aquarium water to prevent water from returning down the air line<br />An essential accessory for every air pump and a good protection during a power or pump failure. <br />Look no further, buy instantly.<br />Color: Random<br />Features: Suitable for anti-backflow of above 99% air pump and widely applied for oxygen tubes with interior diameter of 4 mm.<br />1 x Check valve<br /><img src="http://img6.eachbuyer.com/x7/p45/v405_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x7/p45/v405_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x7/p45/v405_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x7/p45/v405_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x7/p45/v405_5.jpg" />