uxcell Plastic Aquarium 3 Way Cross Shape Pump Air Valves Splitter Tube Connector 4 Pcs Gray</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>They are made of good quality white plastic， non-toxic and durable</li><li>It is suitable for connecting standard aquarium tubing， mending or extending air hose</li><li>OutletDia(Each) : 4mm/ 0.2";</li><li>Overall Size : 42 x 37 x 12mm / 1.7" x 1.5" x 0.5"(L*W*D)</li><li>Thread Diameter : 11mm/ 0.4"</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/31AG5JLcUnL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31l9rj24Y0L.jpg' noproxy></br>