Dremel 3.2mm Polishing Brass Brush Stainless Steel Wire Bristle 532 537 Dremel Accessories#537 Brass Brush Ideal for cleaning and surface finishing items made from gold, bronze, copper or brass Use a brass brush to create a soft, satin or matte finish Very effective on flat surfaces and in hard to reach areas like slots (brass wire is non sparking and softer than steel) Great for cleaning #532 Stainless Steel Brush Ideal for cleaning, deburring and surface finishing items made from stainless steel, aluminum, silver, pewter or other white