The PUR PLUS Great Taste Faucet Mount RF-9999 Replacement Filters 3 Pack is a set of blue carbon/charcoal water filters designed to remove lead contaminants. Made of plastic and with a capacity of 100 gallons, these filters are compatible with Brita Maxtra+ models and are suitable for household use. The 3-stage filtration method ensures clean and great-tasting water, making them an essential addition to any kitchen. The brand, PUR, is known for its quality water filtration products, and these filters are no exception, providing a convenient and effective solution for improving the taste and purity of your tap water.