The HDX Water Pitcher Replacement Water Filter Cartridges come in a convenient 8-pack, designed for easy replacement in your water pitcher. These BPA-free cartridges feature an activated carbon and ion exchange filtration method to provide clean and refreshing water for your convenience. Compatible with top brands like HDX, BRITA, PUR, and GREAT VALUE, these white filter cartridges are a reliable choice for maintaining a clean and fresh water supply in your home.