The Hagen 10682 is an aquarium coil brush that cleans filter tubes up to the following dimensions:
The Marina Flexible Aquarium Coil Brush - Hagen 10682 features a handle that bends to access hard to reach places in your aquarium tubing. This coil brush is made from quality, durable materials. This Marina coil brush helps keep your aquarium tubing clean.
The Hagen 10682 specifications: