Maintain Pure, Rejuvenating Water Quality Keep your shower experience fresh and healthy with this 2-Pack of Replacement Filter Cartridges, exclusively designed for Hammer-Shaped Handheld Shower Heads. Engineered with an advanced 7-stage filtration system—featuring KDF-55, Calcium Sulfite, Maifan Stone, and Vitamin C balls—these cartridges effectively reduce chlorine, heavy metals, and impurities while infusing water with beneficial minerals. This process helps soften hard water, making it ideal for relieving dry, itchy skin and reducing hair breakage for sensitive users. The innovative transparent housing allows for instant visual inspection; simply check the color to know exactly when it's time for a change. Each cartridge offers up to 3-6 months of peak performance. Installation is effortless—just unscrew the old one and twist the new one in within a minute, no tools required.