This is a Takagi water purifier integrated faucet. It does not include a cartridge, so please prepare one separately. I installed a faucet compatible with 7+1 cartridges during a kitchen remodel, but I have since switched to a faucet that supports higher-end cartridges, so I am selling this one. If you already have a 7+1 water faucet, how about using this as a replacement? It was used for 4 months. It will be disinfected with alcohol and cleaned before shipping. - Type: Faucet water purifier - Function: Tap water purification - Design: Metallic finish *Please confirm with the buyer whether you can receive regular deliveries by purchasing this product. *Please confirm with the buyer whether this faucet is compatible with your home's faucet nozzle.