12 oz. (340g) Aerosol Spray for Blackening Metals, Glass, Ceramics and Tiles. Creates solid black engraving on coated metals including stainless steel, brass, aluminium, copper, chrome plating and many more. One can will cover approximately 1,100 square inches. Quick and easy to use. Permanent and High contrast. Resistant to corrosion, abrasion, fading, cracking and peeling.