RAW MATERIAL - Made of stainless steel and nylon bristles, perfect for cleaning the inside of matching pipes. Well-made nylon bristles aren’t easy to pluck either. FLEXIBLE AND DURABLE - The cleaning brushes are bendable, easy to insert into the pipes, the double-ended brushes work in small bent pipes such as U-shaped tubes, remove algae and dirt accumulated in the pipes pipes and tubes. ITEM CONTAINS - Including 2 pieces of aquarium water filter, air hose hose, stainless steel double ended hose brushes. BRUSH SIZE - 155cm total length for cleaning long pipes Super convenient for cleaning sink plug holes. Double sized heads - brush diameters 2cm for small end, 3cm for large end. PERFECT TOOLS FOR CLEANING - Long double ended brush, flexible and bendable. Great for cleaning small pipes, easy to remove algae, perfect tools for cleaning water filter, aquarium, fish tank and home kitchen pipes. Features: - Material: plastic bristles, stainless steel and nylon. - Brush of 155 cm total