High-foaming, free-rinsing, Scale, Lime, and Rust remover. Brightens metal and concrete as it removes stains, descales, and deodorizes. Fortified with phosphoric acid to work FAST. Inhibited to protect metal surfaces from flash-rusting and corrosion. Pleasant cinnamon scent. Dilutes up to 1:30. Each quart dozen ships with 12 flip-top caps, 12 black trigger sprayers, and one bowl mop. Excellent for marine applications, can be used on hull without damage harming gel coats. Ideal for use on marine applications, toilets, urinals, tile, grout, concrete, brick, pots, pans, ceramic, chrome, diamond plate, aluminum, brass, copper, stainless steel, coils & filters, ice machines, and glass. Excellent for acid-descaling coil cleaning applications. Safe on nickel and other soft metals and most painted surfaces.