The Genuine PUR RF-9999 MineralClear Replacement Faucet Filters Pack of 3 is a set of blue water filters designed for use with Brita Maxtra+ faucets. Made of plastic, each filter features a 3-stage filtration system with carbon/charcoal filtration method to remove lead contaminants. With a capacity of 100 gallons each, these filters are suitable for household use and are compatible with Brita faucets. The product comes in a pack of 3, is brand new and sealed, making it a reliable and convenient option for clean and safe drinking water.