20 oz. Spray. Melts brake dust, dissolves corrosion from all metals, cannot damage clear coats, plastics, anodizing paint or any metal. Can be used on showers & tubs, lime deposits, boat scum, water spots, brass, copper, zinc and bug splatters. Spray on dry surface, wait 60 seconds, agitate with nylon brush or fine scuff. Rinse and dry. Use with PPC’s aluminum polish