GE GX1S50R Single Stage Drinking Water Filtration System Single stage filtration: Water is filtered once Chrome faucet with filter replacement indicator: Faucet and full installation kit included NSF certified: Reduces lead, cysts, asbestos, chlorine taste and odor and other contaminants Twist and lock design: Provides for easy, tool-free, no-mess filter replacement Six-month filter life: Filter (GXRLQR) should be replaced every six months for best filtration results