The Forney 60030 Mounted Point has a 1-1/16" x 1/4" Point Top A15, perfect for grinding, polishing, or deburring ferrous metals and other hard surfaces. This tool is made with durable, high-grade 60 grit aluminum oxide for maximum RPM of 50,510 as well as a 1/4-inch (6.35 millimeters) chuck high-speed drill. Get the job done quickly and efficiently with this easy-to-use mounted point.