Sakaika FT-B388 Filter Replacement Cartridges for SH-B388 Shower Head, Pack of 2 (1-YEAR SUPPLY) REMOVES CHLORINE & SOFTENS WATER  Eliminates up to 99% of chlorine lead calcium magnesium and iron REJUVENATES YOUR BODY  Revitalizes your hair skin and nails by charging water with antioxidant ions EASY TO ASSEMBLE  Just unscrew the shower head front plate and replace old filter with the new one LONG LASTING  Filter lasts 6 to 8 months or 10,000 to 12,000 gallons depending on usage and your local water condition PURIFIES WATER  Removes bacteria and inhibits the growth of scale algae fungi and mold