[G1/2 General Connection] Suitable for most common faucet pumping hoses. The outer thread connection diameter of our pull down faucet is 20.5mm or 0.8inch or 13/16inch (outer diameter). (Note: Please check the tap connector size before purchase). [3 Functional Modes] The printhead has two modes (Spray Mode & Flow Mode & Pause Mode). Spray mode: This mode is suitable for washing hands, fruits and vegetables, etc. Flow Mode: This mode is used to remove stubborn stains, such as cleaning sinks, plates, bowls, etc. Pause mode: If there is no water for a short time, you can switch to this mode. Press the button to switch function. [Material] Engineering grade plastic (ABS) structure to ensure quality and service life. The nozzle surface is matte black to prevent discoloration. [Installation and cleaning] No tools required, simple installation, just screw on. Just check if the connection works with the existing faucet. No footprints will be left after using the sprayer.