*Strong cleaning power: With 4 filter layers, our product offers effective cleaning. The nonwoven fabric layer mainly filters sediment and other large particles. The material removes fine suspended particles and destroys ion nuclei, which effectively prevents the formation of limescale. The activated carbon adsorbs organic substances in the water as well as foreign odors and colors, along with other pollutants. The calcium sulfite bottle absorbs residual chlorine and other pollutants in the water. *Durability and robustness: Our carbon fiber cartridge is made of improved activated carbon material and offers a filter volume of 2000 liters. It has a strong adsorption power and is durable. For a family of three, one cartridge lasts for an average of 4 to 6 months. *Technical specifications: Product size for 1 piece: 41*41*8.4mm Packing size: 12.1 x 6.8x 9cm Surface treatment: gray + white Filter: carbon fiber Packing including: 2x water filter tap cartridges