The 3 in Carbon Steel Crimped Wire Cup Brush offers continuous brushing action for removing rust, scale and weld splatter. The durable carbon steel wire construction is ideal for edges, paint-scale and light rust removal on flat or irregular surfaces. The X-LOCK quick change system provides up to 5x faster cup brush changes vs a standard angle grinder mount. Simply pull the release lever on the X-LOCK Angle Grinder and change the wire cup brush - no tools needed.