Using your Brizo Kintsu Bar Faucet Knob Handle Kit is a piece of cake. Just turn the knob or handle as you would with any regular faucet to control the water flow. For installation, follow the included instructions. It's designed for easy setup, but if you're unsure, it's always a good idea to call a professional. When it comes to maintenance, wipe the knobs and handles with a soft, damp cloth regularly to keep them looking shiny. Avoid using abrasive cleaners as they can scratch the finish. If there are any hard - water stains, a mild soap solution should do the trick. Also, check the connections periodically to make sure there are no leaks. With proper care, your Brizo Kintsu handle kit will serve you well for a long time.