This 5½' long 1/4" brush is perfect for cleaning beer lines. Clean your entire lines from shank to keg with this extra long brush without having to go in both ends. Fits 1/4" interior diameter beer tubing, and 5mm by 8mm EvaBarrier tubing.
Also useful for cleaning keg dip tubes.
If this is what you need, then this will get it done. Nice and long. Stiff but not too rigid. Yes I'm talking about the brush.