Weiler® 13113 Wire Wheel Brush, Knotted, Diameter: 4 Inch, Face Width: 1/2 Inch, Wire Size: 0.014 Inch, Trim Length: 7/8 Inch, No. of Knots: 24, Arbor Size: 5/8-11 UNC, Max. RPM: 20000, Mounting: Threaded, Filament Material: Stainless Steel