3M Cubitron II Cloth Cone 947A reaches into corners, inside surfaces and tight spaces to refine welds, remove machine tool marks, and polish. Built with 3M Precision-Shaped Grain on an X-weight poly-cotton cloth backing. A resin bond is heat resistant and a grinding aid helps to run cool, especially on heat sensitive metals like stainless steel and nickel alloys.One of 3M's best cloth-backed abrasives for stainless steels, aluminum and carbon steel, 3M Cubitron II Cloth Cone 947A is most used with die grinders. Featuring 3M Precision-Shaped Grain, this high-performing abrasive contains a grinding aid, making it ideal for medium to high-pressure applications on stainless steel and other exotic alloys, along with carbon steel, cobalt chrome, and nickel alloys. These attributes make 3M Cubitron ll Cloth 947A Cone a good match for projects that require an equally durable and flexible abrasive. This specialty abrasive is a valuable tool for reaching into corners, where larger diameter tools can't work. It is effective for flash removal, as well as polishing or removing machine tool marks and edge breaking. Cloth cones mount onto a compatible mandrel (sold separately) that attaches to a die grinder or power drill. The center hole diameter of the cone must be equal to the diameter of the mandrel pilot inserted into the cone.