The Brush Research MGBD4 Flex-Hone is a precision cylinder honing tool designed for reconditioning engine cylinder bores, cylinder heads, and pistons. Its 4-inch diameter barrel features a diamond-coated cutting edge at 180 grit, delivering consistent material removal and a smooth, controlled surface finish.
Built for ease of use, this flexible hone attaches directly to a standard drill or rotary tool, making it a practical choice for automotive technicians and DIY engine builders alike. The flexible abrasive design self-centers within the bore to produce uniform honing results with minimal operator effort.