The Forney 60053 Mounted Grinding Wheel is perfect for precise grinding, polishing, and deburring of ferrous metals. Crafted from 60-grit aluminum oxide, this durable wheel is designed for use with a 1/4" (6.35 millimeters) chuck power drill. Fast and precise at 3,450 max RPM, it's a great choice for small abrasive jobs, coming in a convenient carded packaging.