Material: Inorganic acid inhibitor, brightening agent, copper corrosion inhibitor Size: 5*5*16cm / 1.95"*1.95"*6.24" Color: as shown in the picture Low foam and high cleanliness: The patina cleaner's low foam formula helps reduce foam during the oxidation removal process, providing a more thorough cleaning effect. Fast dissolving: Effectively dissolves oxidation layers on copper, bronze, tin, and copper alloys without the need for extensive wiping. Gentle formula: Designed with a gentle formulation that cleans without damaging copper or bronze surfaces, helping preserve your items. No residue: Cleans without leaving behind traces or residues, maintaining the appearance of your copper and bronze items. Economical and practical: A cost-effective solution for cleaning and maintaining copper and bronze items. Package includes: 1 x patina cleaner