Using this Brizo Kintsu pull - down faucet knob handle kit is easy. To operate the pull - down spray head, simply grasp it and pull it down. You can switch between different spray modes by pressing the button on the spray head. For installation, follow the instructions in the kit. Make sure to turn off the water supply before you start. When it comes to maintenance, clean the handle and spray head regularly with a soft cloth and mild soap. Avoid using abrasive cleaners as they may scratch the surface. Also, check for any leaks periodically to ensure everything is working properly.