- Versatile Sizing: This pipe cleaning brush set includes nine different diameters: 1/4", 2/5", 1/2", 3/4", 1", 1 1/4", 1 1/2", 1 3/4", and 2" (6, 10, 13, 19, 25, 32, 38, 45, 50 mm). Each brush measures 8.25 inches (200 mm) in length, making it suitable for a wide range of pipe sizes. - User-Friendly Design: Cleaning pipes is effortless. Simply insert the brush into the pipe, rotate to clean, then remove and rinse. The long, durable bristles effectively clean various sizes of pipes without hassle. - Quality Construction: Made from twisted steel, these brushes are sturdy and resistant to corrosion. The stainless steel bristles are flexible yet strong, designed to withstand rigorous use without shedding. All brushes are conveniently stored together in a round ring for easy organization and space-saving. - Exceptional Durability: These stainless steel bristles are engineered for flexibility and strength, ensuring they won't break easily like inferior straw brushes. This set is ideal for cleaning auto parts, bottles, guns, and tubes, making it a versatile addition to your cleaning toolkit. - Practical Applications: Use these brushes for maintaining automotive components, cleaning hard-to-reach areas in bottles, or ensuring your firearms are free of debris. Their robust design allows for thorough cleaning in various applications, enhancing performance and longevity.