Dewalt High Performance DW4999 Grinding Wheel, Type 27, General Purpose, Outside Diameter: 7 Inch, Thickness: 1/4 Inch, Arbor Hole / Thread Size: 5/8-11 Thread, Grade: R, Grit: 24, Abrasive Type: Aluminum Oxide, Max Speed: 8700 Rpm, Mounting: Threaded, Product / Materials Abraded: Metal For Additional Product Information, Click Here