Clear clean great-tasting water for drinking and cooking is easier to achieve than ever before with the Culligan® family of EZ-Change Drinking Water Filters. The Culligan® US-EZ-4 Premium Under-sink Drinking Water Filter System features a twist-on twist-off mechanism quick-connect fittings and double water shut-off. The filter reduces bad taste & odor aesthetic chlorine taste & odor sediment lead cysts such as giardia and cryptosporidium mercury turbidity particulate class I VOC s MTBE and chloramines. The package includes filter head with built in bracket RC-EZ-4 Premium Filtration replacement cartridge mounting screws supply adapter lead-free faucet with built-in electronic life indicator 1/4-inch plastic tubing.