[General G1/2 connection] Suitable for the most common faucet pumping hoses. The external thread connection diameter of our pull-down faucet is 20.5 mm or 0.8 inch or 13/16 inch (outer diameter). (Note: Please check the connector size of the faucet beforebuying). [3 functional modes] The print head has two modes (spray mode and flow mode and pause mode). Spray mode: This mode is suitable for hand washing, fruits and vegetables, etc. Flow rate mode: This mode is used to remove stubborn stains, such as cleaningsinks, 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 functions. [Material] Engineering-grade plastic (ABS) structure to ensure quality and service life. The surface of the nozzle is matt black to prevent fading. [Installation and cleaning] No tools required, simple installation, just screw on. Just check if the connection works with the existing faucet. No fingerprints will be left after using the sprayer.