A. Flexible Filter Brush Set This double - headed filter brush is made of soft nylon bristles and stainless steel. The flexible long brush with a soft brush head can be reused and is easy to push and pull. It is suitable for cleaning aquariums, filtration systems, hoses, glass tubes, and pump accessories. B. The Tool for Pipe Cleaning The hose brush is a good choice for cleaning small - diameter pipes. When you insert the brush into the pipe, it can help remove the accumulated dirt. It is suitable for aquariums, fish tanks, shower drains, and kitchen cleaning. Size (approx.): The spring length is 200 cm. This is a useful tool for pipe cleaning: The hose brush is a good choice for cleaning small - diameter pipes. When you insert the brush into the pipe, it can help remove the accumulated dirt. It is suitable for aquariums, fish tanks, shower drains, and kitchen cleaning. The flexible long brush with a soft brush head can be reused and is easy to push and pull. It is suitable for cleaning aquariums, filtration systems, hoses, glass tubes, and pump accessories. C. Application Scope It is suitable for pipes with an inner diameter of 8 mm - 28 mm, such as pipes in aquarium filters, aquariums, lily tubes, shower rinsers, car drains, or other long hoses. D. Color: Three colors Quantity per pack: Two packs, buy two get one free.