ABN 7&rdquo; Inch Mini Wire Detail Brush 3-Piece Set &ndash; Nylon, Brass, Stainless Steel &ndash; Metal Brushes for Cleaning & Automotive Practical: The ABN 7 Inch Mini Wire Detail Brush 3-Piece Set  Nylon, Brass, Stainless Steel  Metal Brushes for Cleaning & Automotive is perfect for all cleaning and detailing applications Soft Nylon Brush: (1) 7 long nylon brush for hard-to-reach areas that require a gentle cleaning Tough Brass Brush: (1) 7 long brass brush designed to clean plugs and batteries Stainless Steel Brush: (1) 7 long steel brush for scrubbing away significant amounts of rust Versatile: For automotive and household applications; Vehicle detailing, cleaning a corroded watch battery compartment, getting mildew off faucets (no need for chemicals), cleaning gun stocks, working with clay, cleaning between the rings on the bottom of pots, scrubbing battery terminals and air filters