ferroday 5/16 barbed air line filter [4 pcs]- sanitary air filter air line fittings for beer brew keg air filter for homebrew white air filter for fish tank translucent plastic gas line fitting ferroday ferroday is aimed at creating a wonderful shop of home brewing, we have many products about home brewing, <br>get more products by searching ferroday on amazon!<br><br> 【product features】:<br> 1. the easy to fit 5/16" barbed connections.<br> 2. filters down to 0.5 micron at 99.99% efficiency.<br> 3. perfect for aeration or oxygenation systems. <br><br> 【please note】:<br> 1. labeled with “in” and “out” on the end of the filter for proper identification of direction, please keep the <br>air flow going in one direction when using it.<br> 2. discard if there is any signs of discolor.<br><br> 【life time service】: we are committed to offer you high quality product as well as superior service! <br> 【lifetime technical support】: please feel free to tell if anyroblem, we would try our best to help!<br><br> 【package】: 4 pcs air filter