Twisted knot stringer design delivers an aggressive, smooth performance rate Removes a wide variety of coatings and contaminants such as paint, rust, scale and weld slag Good choice for cleaning grooves and weld beads, as well as preparing surfaces for welds or coating applications Stainless steel wire is recommended for use on stainless steel, aluminum and other non-ferrous metals Stainless steel wheel is stamped with SS for easy identification