It's the one filter brush that does it all. This handy device cleans filter tubing of nearly any diameter or length easily. Efficiently removes algae and slime build up. Works great on canister filter tubes, like those found on Magnums, Fluvals and Eheims. Excellent for cleaning the filter tubes found on AquaClear, Whisper and Penguin filters. To use, you simply push the long cord through and then pull. Features a 48" long, sturdy, flexible cord. (It is rolled up in the packaging in the image shown.)