The 9x Water Filter Replacement by ykz_beaquicy is designed specifically for the Zero Pitcher and Dispenser ZR-001 ZR-017. Made with PP cotton, iron exchange resin, mesh, plastic, and activated carbon, this filter uses a carbon/charcoal filtration method to ensure clean and refreshing water. The pack includes 9 white filters that are compatible with Aqua Optima brand water purifiers and various Zero Water pitcher models. Trust in this high-quality replacement filter for your water purification needs.