Make pure drinking water with your own home reverse osmosis system. Great in the kitchen: Improve the taste of your cooking, coffee, ice, and drinks. Experience true crisp clean purification with reverse osmosis. Safe filtered fresh tasting H2O: This RO inline filter removes major water contaminants like Chlorine, Rust, Sand, Total Organic Carbon (TOC), Dirt, Pharmaceuticals, Silt, Turbidity, Dust, Volatile Organic Chemicals (VOC), Herbicides, Industrial Solvents, Insecticides, Pesticides, Chemicals causing bad tastes, odors, and more. Easy inline filter design. All filters in the half 6-month filter set are engineered to work together and complement each other for long-lasting high-grade contaminant removal. This means you're getting the cleanest water and the best value in filtration with your RO system replacement filter. Fully compatible with 1/4" quick connect tubing. These replacement RO filters are best for apartment, residential, condo, RV, and office uses. Certified by an independent laboratory to NSF standard 58. Operates on 45-80 PSI water pressure, you may need a Booster Pump or Pressure Regulator depending on your water pressure. The water from your reverse osmosis countertop system will be cleaner and more convenient than any pitcher, faucet filter, or other countertop systems. Express Water's Countertop 100 GPD Reverse Osmosis Full Water Filter Set FLTEZRO4 is the easiest filter solution for your drinking water.