Description: 【Bore Brush Size】: Bore cleaning brush, length 10cm/3.94inch, 14 different diameters: 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 22, 23, 24, 25mm. 【Durable Material】: The bore cleaning brush set is made of high quality metal material, wear resistant, sturdy and durable to use. 【High Efficient】: The bore brush can easily clean narrow holes and confined areas, is convenient and labor saving, and has a long service life. 【Easy to Use】: Bore brush set with 1/4 inch hex shank, suitable for power drills, impact drivers, etc. 【Wide Applications】: The wire bore brush set is suitable for garages, workshops, kitchens, etc. Suitable for cleaning ports, tubes, bearings, etc. Specification: Material: Metal Package Includes: Optional: 17pcs: 14 Bor e Brushes 3 Wire Brushes or 14pcs: 14 Bor e Brushes Note: Please allow slightly errors due to manual measurement and different monitors.