Description: The bore brushes are strong and durable, they can provide you with effective cleaning effect. The bore cleaning brushes can be applied for ports, tubes, bearings, cylinders or other narrow clean up requirements. This wire twisted brushes can also use on any power drill or mold grinder, and they are suitable replacement for traditional hand wire brushes. Note: 1.Please do not exceed 600 revolutions, and do not rotate counterclockwise, it is only for pushing and pulling. 2.Pay attention to the correct use of these brushes to extend the service life.Package Including24 x Bore Brushes