This pack of ZeroWater 5 Stage Replacement Filters is perfect for those who want to keep their water clean and fresh. With a capacity of 4 packs and a model number of ZR-006, these filters are compatible with Aqua Optima Evolve and suitable for both household and commercial use. Made of plastic and containing carbon/charcoal, reverse osmosis, and alkaline ionizer filtration methods, these filters are designed to remove kitchen contaminants and provide clean, refreshing water. The pack comes with 2 filters, each with 5 stages of filtration. Get your hands on these replacement filters to ensure that your water is always pure and refreshing.