Brush Research is a American manufacturer of industrial brushes and honing tools. For many years, the Flex-Hone tool has been used for industrial and automotive applications, but these days, the capabilities of this honing tool have expanded to include a range of firearm applications. Many gun manufacturers, gunsmiths and hobbyists use the Flex-Hone tool to produce a plateau surface finish in any type or size chamber, cylinder, forcing cone, magazine tube, slide or smooth bore barrel to keep their guns in top shape and working effectively. (less)