STANDARD CONNECTION: male connection of our faucet head is 20.5mm or 0.8" or 13/16"(outer diameter), NOT 1/2", inside diameter is 14mm or 9/16", ONLY designed for a STANDARD TYPE of pull out hose, fits most applications, but doesn't fit some models of specific brands, please check the size and thread type before ordering SOLID AND QUALITY CONSTRUCTION: made of engineering-grade ABS plastic with premium oil rubbed bronze finish for durability, built-in check valve helps shut off water when faucet is turned off 3 SETTINGS & EASY OPERATION: easy to manipulate, one click to switch between stream and spray, keep pressing the round button for pausing water while filling multiple glasses DELIVER POWERFUL WATER FLOW: there is no restrictor, provide great water pressure, so much convenient for rinsing fruits, cleaning sink or washing kitchen utensils EFFICIENT REPLACEMENT NOZZLE: a simple and effective replacement spray head for the clogged or broken one, save you a lot from buying a whole faucet set, unscrew the original and screw this one onto your setup