Easily prevent limescale with the Scanpart Anti-Limescale Water Filter Screw-in. Screw the filter into the machine and enjoy delicious coffee. On top of that, the filter extends the machine's lifespan, because limescale won't be able to attach itself to the heating elements. The package contains 1 dose to keep the coffee machine limescale free for 2 months. It's suitable for AEG, Bosch, Krups, Siemens, Gaggenau, Neff, and Melitta machines.