1. If you have a problematic plumbing fitting, you may only need to replace the cartridge and not the entire fitting. 2. Our Kerox NKJ35A replacement cartridge can replace the non-working cartridge of a single lever faucet. It has a diameter of 35 mm with conventional volume and temperature control, with the temperature range shifted to the right. 3. The NKJ35A single handle faucet rotates differently than the standard K35A cartridge. The NK35 model is available with either NKJ (right rotation of the temperature range) or NKB (left rotation of the temperature range) for volume and temperature control. 4. Both options are ideal for a side faucet to prevent the lever from hitting the backsplash. This cartridge is made of ceramic, representing the latest development in modern faucet technology.