Simplify your light-duty metal conditioning work with this easy-to-use, long-lasting and quick cleaning 3" Makita CRIMPED Wire Cup Brush, designed to work with your 4-1/2" Angle Grinder. Unlike a coated abrasive, however, a wire brush is designed to condition metal surface area and is NOT a metal removal accessory. Ideally suited for light corrosion, rust and paint removal. Holding the brushes at an angle of no more than 5 degrees with light, constant pressure ensures full wire-workpiece contact and maximal wire life. Incorrect angles or excessive pressure makes the wires heat up, become fatigued and prematurely break, while also may show up as bluing of the wires and the "groaning" of the angle grinder from the excessive load. Carbon Steel Brushes should only work on Carbon Steel to avoid cross contamination on particular applications such as Stainless Steel/INOX..