[Right suitable for the job] This copper pipe cleaner kit prepares copper pipes, tubes, and fittings suitable for soldering / sweating. [Internal locking mechanism suitable for the pipe cleaner] The newly-engineered internal locking mechanism in the pipe cleaner improves the durability and reduces the likelihood of shank relative to housing. [Standard size] They work suitable for standard copper, bronze, and brass pipes and fittings. is the nominal size suitable for the standard pipes, but the measured OD of pipes and ID [Used on power drills] The hex shank is compatible with most power drills. The brushes are used at low speeds on power drills (not impact drivers), and are run in clockwise direction (not designed suitable for counterclockwise direction). It makes the cleaning job much easier and faster. [Tools suitable for everyone] It is a tool set suitable for homeowners, DIYers, plumbers, and contractors etc. Colour:Photo Color Material:Plastic+Stainless steel Package Contents: 3x tube brushes 6x wire brushes 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.