This is a hose for a Kitz Micro Filter Oasis water purifier. I ordered it in May of this year as a replacement, but I found a water leak in the faucet area, so I ended up replacing the entire water purifier. Since the entire water purifier includes the main unit, cartridge, and hose, this hose is no longer needed. It's new, but I tried to install it once and ran water through it, so I'm selling it at a low price. After running water through it, I dried it. Upon inspection for listing, I found some rust on the nut part (probably rust from a wrench). I don't think it will affect the product's use. #Panasonic #Torayvino #Takagi #TOTO #Takagi #LIXIL