Hexagon Alkaline Water Filtration System 2 Cartridge 2 is a specially blended mineral block that produces, hydrogen-rich water alkaline water with pH between 8-10 Bio-available ionized minerals Good for up to 3,000 litres or 6 months (whichever hapens sooner) You will get 1 x Hexagon Alkaline Water Filtration System 2 Cartridge 2