Brush Research Flex Hone BC27812 Brake Cylinder Hone 2 7/8″ (78mm) The Brush Research Flex Hone BC27812 is a brake cylinder hone that is 2 7/8″ (78mm). It is a flexible honing brush with silicon carbide abrasives that can be used on mild steel, stainless steel, and cast iron. It has a soft cutting action and can remove burrs from cross-drilled holes. It is also compatible with automated and CNC equipment. Features The FLEX-HONE process (Super finishing) produces a controlled surface condition unobtainable by any other method. It involves finish, geometry and metallurgical structure. A high percentage plateau free of cut, torn and folded metal (with radiused ports). A resilient, flexible, honing tool with a soft cutting action. The abrasive (points) globules each have independent suspension that assures the Flex-Hone to be self-center. Specification Order Part Number: BSBC27812 Item Description: BRAKE CLINDER HONE 2 7/8″ ( 78mm) Country of Origin: US Harmonization Code: 82079000 Default Selling Unit: EA