BWTs Pure Slim 2 Duo Drinking Water Filtration system is a compact under the sink solution that delivers Magnesium Mineralized Water whenever you need it. The advanced double filter system removes the chemicals that often impair taste, and reduces limescale, before adding magnesium into the filtered water. A complete drinking water system, it is supplied with a modern filter head and two specialist filters, an attractive drinking water tap and an easy to use installation kit. The filter cartridges can easily be replaced and are long lasting.