🚿 What This Is: The replacement cartridge for the HammerHead Inline Shower Filter — 450 grams of KDF-55 (copper and zinc) plus calcium sulfite, the same filtering media as the original housing. Swap it in, keep the brass housing. Rated for 6 months or 10,000 gallons.

🔗 Pairs With: The HammerHead Solid Metal Inline Shower Filter.