[Durable Construction] Made of high-quality stainless steel spring that is flexible, bendable, and maintains its shape. [Versatile Use] The double-ended design makes it perfect for cleaning bent pipes, U-shape tubes, and hard-to-reach areas. [Two Brush Sizes] Comes with two different sizes of cleaning brushes suitable for pipes and glass tubes with diameters ranging from 9 to 35mm. [Ideal for Aquatic Care] Perfect for maintaining and cleaning water pumps, filters, pipes, connectors, and other aquarium equipment. [Multiple Color Options] Available in three attractive colors: Yellow, Blue, and Transparent for added choice and personalization.