I've been using this head for about three years, replacing the original one. You can see some scratches from use when held up to the light, but they're not noticeable at all during everyday use. I think it's clean because I cleaned it quite diligently. This is a used item, a household product, so please understand that before purchasing. Water purifier model number → JA4-02 Cartridge → JC0032ST I had also listed a new one of the same model, but it was sold on another app, so I deleted it. This item is also for sale on other apps, so please be aware that it may be removed suddenly.