Contains 2 bottles, 4.2 fl oz each. Good for two treatments. Quickly and safely descales, cleans and protects all brands of coffee and espresso machines. Also great for water kettles. Removes limescale/calcium deposits. Ideal for fully and semi-automatic machines, capsule and pod coffee machines, as well as any type of espresso machine, regardless of make or model. Regular use ensures best coffee quality (hot water!) and extends the life of your coffee or espresso machine. Suggested to use every 3 months or 100 uses.