Water filters undersink kit"ez-change" Kit includes filter head with built-in bracket, RC-EZ-3 replacement filter cartridge, mounting screws, supply adapter, lead-free faucet with built-in electronic cartridge life indicator, 1/4 inches plastic tubing, and filter change reminder sticker. Features tw ist-on, twist-off mechanism, and quick-connect fittings - double water shut-off. NSF certified. 500 gallon capacity. Reduces bad taste and odor, chlorine taste and odor, sediment, lead, cysts such as cryptosporidium and giardia, turbidity, atrazine, linda ne, particulate class I.