Features: FLEXIBLE DOUBLE ENDED BRUSH: Made of high quality soft nylon bristles and stainless steel, flexible two-end long brush, reusable for many times, easy to push or pull. 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. PERFECT TOOLS FOR TUBE CLEANING: This hose brush is designed to clean small diameter pipes and removes buildup and algae from inside tubing. PRODUCT SIZE: Brush head sizes are approximately 0.6x2.4 inches and 1.2x2.4 inches, total length: 61 inches, suitable for cleaning water pumps, filters, pipes, connectors, and other hard-to-reach places. WIDELY USED: Ideal for aquariums, fish tanks, pet drinking fountains, and kitchen applications. Specifications: Material: Metal, Nylon Color: Yellow, Blue, White, Black, Transparent, Green Length (Approx.): 155 cm / 61.02 in Weight: Approx. 65 g Package Includes: 1 Piece Aquarium Filter Brush (Color may vary: Yellow, Blue, White, Black, Transparent, Green) Note: 1. Please allow 0-1 cm error due to manual measurement. Please ensure you are comfortable with this before purchasing. 2. Due to differences in monitor displays, the picture may not reflect the actual color of the item. Thank you!