1. FLEXIBLE DOUBLE ENDED BRUSH: Made of soft nylon bristles and stainless steel, flexible two-end long brush, and it can be reused multiple times, easy to push or pull. 2. HOW TO USE: Use a mild detergent and warm water, rinse thoroughly with cool water, keep the tube as straight as possible and gently work the brush in a back and forth motion, in short strokes, gradually working further inside the tube. Avoid aggressive use when cleaning. 3. PERFECT TOOLS FOR TUBE CLEANING: This hose brush is suitable for cleaning small diameter pipes and it helps remove gunk build-up and even algae when they run into the tubing. 4. PRODUCT SIZE: The brush heads sizes are about 0.6x2.4 inch and 1.2x2.4 inch, total length: 61inch, suit for cleaning water pump, filters, pipe, connector, and other hard-to-reach places. 5. WIDELY USE: Ideal for aquarium, fish tank, pet drinking fountain, and home kitchen. 6. Specifications: Material: Metal, Nylon; Color: Yellow/Blue/White/Black/Transparent/Green; Length (Approx.): 155cm/61.02in; Weight: Approx.65g. 7. Package Includes: 1 Piece Aquarium Filter Brush (Yellow/Blue/White/Black/Transparent/Green). 8. note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!