Complete 3-Size Copper Pipe Cleaning Kit: Includes 1/2", 3/4", and 1" copper pipe cleaners with sizing marks for precise alignment. Each set features a dedicated brush installation tool for safe, edge-free blade changes. Dual-Use Design with Drill & Manual Modes: Features a 1/4" hex shank compatible with drills and manual operation. Detachable shank for tight spaces, enhanced by a knurled grip for superior control in hand use. Aerospace Aluminum Construction: Made with aerospace aluminum alloy and 304 stainless steel brushes, oxidation- and heat-treated for high-torque resistance, ensuring durability under professional conditions. Innovative Threaded Bottom Lock System: Screw-base design ensures secure brush fixation and allows for tool-free brush replacement. Side rivets and an internal locking mechanism prevent rotation during use, ensuring consistent performance. Versatile Multi-Industry Application: Suitable for solder prep, rust and paint removal, and maintenance across plumbing, refrigeration, AC repair, and industrial projects. Cleans copper, aluminum, iron, and HVAC metal pipes efficiently. Color: Blue Material: Metal Package Contents: 3 x Copper pipe cleaning drill bits Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. Measurement tolerance is +/- 1–3 cm.