The Weiler 21110 is a wire double-stem, double-spiral steel bristle tube brush for cleaning and deburring drilled holes, pipes, tubes, internal threads, and other areas that are hard to reach with a rotary power tool. The brush has a 0.006" wire size, a 3/4" brush diameter, and is 5-1/2" long. Due to its twisted wire construction, the brush is suitable for use in low-speed tools where revolutions per minute (RPM) can be set. It is not suitable for use in tools with reverse rotation, which could unravel the brush.
Weiler manufactures precision brushes, abrasives and maintenance products. The company was founded in 1898 in Germany, is headquartered in Cresco, PA, and is International Organization for Standardization (ISO) 9001 certified.