Random Products 80178 Cut-Off Wheel, Type 27 Depressed Center, Outside Diameter: 4-1/2 Inch, Thickness: 3/64 Inch, Arbor Hole / Thread Size: 7/8 Inch A.H., Max Speed: 13300 Rpm, Mounting: Arbor, Product / Materials Abraded: Metal/Sheet Metal/Gratings/Tubes/Conduit