IVY Classic 39054 5-Inch x 5/8 - 1/2-Inch Arbor, Carbon Steel Crimped Bench Wire Wheel - 0.012-Inch Coarse, 1/Card Removes rust, dirt, scale, paint and cleans welds Precision balanced to eliminate vibration Tempered carbon steel bristles for long life Wire Diameter: Coarse 0.012-inch, Face Width: 9/16-inch Wheel Diameter: 5-inch, Arbor: 5/8 - 1/2-inch, Max RPM: 4,500