[RIGHT FOR THE JOB] This pipe cleaner set prepares 1/2, 3/4, and 1-inch copper pipe and fittings for soldering, dip soldering, brazing, or welding. [Internal Locking Mechanism in Pipe Pig] The ly designed internal locking mechanism in the pipe cleaner improves durability and reduces the possibility of the handle rotating relative to the housing. [STANDARD SIZE] This tool set is suitable for 1/2, 3/4 and 1 inch (nominal size, measuring OD/ID is approximately 5/8 inch, 7/8 inch and 1(1/8 inch) Copper, bronze and brass pipes and fittings. [QUICK CLEANING] No more slow manual cleaning/sanding - they make cleaning copper pipes and fittings easier and faster. [For Electric Drills] 1/4 inch hex shank is compatible with most electric drills. The brush is used on a power drill (not an impact driver) at low speed and runs in a clockwise direction (not designed for counterclockwise). Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Color: As Shown Material: Metal Package Contents: 15Pcs metal pipe/copper pipe cleaning brush 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.