A natural way to purify and remove impurities from drinking water and your home. A single stick of genuine Binchotan charcoal. Add to any bottle or jug with safe drinking water to filter water naturally. Remove chemicals such as Chlorine while adding minerals like Calcium to your tap water and have great tasting water in 1-8 hours. Will last 6 months with daily use. Approx. 11-12 cm long x 2cm