Comprehensive Sizes: Featuring brush diameters of 3/5" (15mm), 1" (25mm), 1 3/5" (40mm), and 2" (50mm), each measuring 6 1/2" (165mm) in length. The set includes four 12-inch flexible rods, tailored to accommodate a variety of cleaning needs for pipes and tubes. User-Friendly Design: Effortlessly clean pipes by inserting the brush, rotating, and washing. The long, hard yet bristles are designed for effective cleaning without damaging the pipes. Ideal for maintaining cleanliness in hard-to-reach areas. Materials: Constructed from twisted steel for durability and stainless steel bristles that flex without shedding. The polymer and alloy rods are -, soft, and robust, featuring threaded connections for enhanced sweeping efficiency. Enhanced Durability: Unlike inferior brushes, our stainless steel handle is exceptionally flexible and break-. Manufactured without lubricant oil, it's safe for cleaning food equipment and molds, ensuring and reliability. Versatile Applications: Perfect for cleaning auto parts, bottles, tubes, lab equipment, valve guides, and water pumps. This brush set is an essential tool for detailed cleaning tasks in automotive, laboratory, and industrial environments. Color: Silver Material: Stainless Steel Package Contents: 4 cleaning brushes, 4 extension rods Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.