Not much to say except this thing is super long and gets your filter tubes cleaned in one swipe. Its much much longer than all the others I have used and is the only reason I went with this model, and its supported by GLA of course. This tube brush is just superbly long, as it should be. Those dinky short ones are totally worthless when you can swipe the filter tubes completely. Keeping my filters running full steam and my tubeset spotless.