Complete four-piece cleaning set for water system components. This essential kit includes everything you need to clean a long-hair brush, a small nozzle brush, a waterline brush, and a drying rack for convenient use. - Complete cleaning set: four essential tools to effectively clean all parts of your water system, including the long-hair brush, the small nozzle brush, the waterline brush, and a drying rack for convenience. - Multifunctional brushes for all areas: each brush is designed for a specific component of your water system, providing targeted cleaning to maintain peak performance. - Efficient and easy to use: simply insert the appropriate brush into the fill port of your water reservoir; keep everything clean with minimal effort. - Gentle and flexible waterline brush: soft bristles reach every centimeter of the waterline without damaging it, delivering thorough cleaning every time. Use scenarios: - Hydration packs and tubing: clean mouthpieces, hoses, and connectors after outdoor activities to prevent mold and odors. - Water filtration pitchers and small-diameter hoses: refresh components and maintain smooth flow with targeted brushing. - After cleaning, use the drying rack to air-dry parts and keep components organized and moisture-free.