Forney 72835 Wire Wheel Brush, Industrial Pro Twist Knot with 5/8-Inch-11 and M14-by-2.0 Multi Arbor, 4-1/2-Inch-by-.020-Inch Twist knot wheel brushes provide high impact action These wheels are used in surface preparation prior to welding Great for removing weld scale, spatter and heavy corrosion Used for heavy duty cleaning applications