Norton Non-Woven Depressed Center Rapid Strip Wheel, 4-1/2" Diameter, 5/8"-11 Arbor Hub, Grit Coarse (Pack of 1) Wheel mounts on random orbit and rotary sanders to remove paint, rust, coatings, light edge burrs, parting lines, and flashing Semi-flexible open web design resists loading, and conforms to edges, contours, and uneven surfaces without gouging Coarse abrasive is uniformly distributed and bonded throughout the wheel for consistent performance Aggressive free-cutting action helps avoid workpiece smearing Mounts using the depressed center with 5/8"-11 threaded arbor hub