Eheim Double Tap Quick Release 0.50 inch/0.65in</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>494 double tap</li><li>Designed for 12/16mm or 1/2" tubing</li><li>Comes with the Eheim 2213 filter but can be used on many filters</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/31hx2b46KkL.jpg' noproxy></br>