The Latest Upgraded Water Filters: Remove chlorine, fluoride, limescale for a great natural taste, and significantly reduces heavy metal such as zinc, copper, lead and pollutants to make the water be clean and healthy for your well being. Wide Compatibility: Compatible with most brands of water filter pitchers. Multilayer Filtering Technology: The High density PP meltblown fiber removes sediment, iron rust, hair, the Ion exchange resin adsorb calcium and magnesium ions to reduce the water scale, the Activated carbon with silver adsorb residual chlorine, odor to adjust the PH, and the Filter net control water flow speed to ensure filtering effect. Long filtering effect: One filter can be used about 30-60 days, or filter 40 gallons of water, we recommend to change it every 30 days, Maximum using time had better be not more than 60 days. Package included: This item includes 2 pieces of water filter cartridges packed with a strong box.