'STANDARD FITTING: the outer diameter of male connection of our pull down faucet head is 0.8'' (13/16'' or 20.5mm), NOT 1/2'', the inside diameter is 0.55'' (9/16'' or 14mm), fits with most applications, but doesn't fit some models from specific brands. Note that it's ONLY designed for a STANDARD TYPE of pull out hose, please check the size and thread type before ordering.FUNCTIONAL AND STYLISH REPLACEMENT PART: this practical faucet spray head with clean looking is designed for kitchen pull down faucet. It's a sleek and functional replacement for the broken or clogged one that came with the faucet, you don't need to buy the whole set up.EASY TO MANIPULATE WITH THREE SETTINGS: this kitchen sink sprayer head has three functions, stream, spray and pause. Simply press and release the button to switch from regular stream to spray. Keep pressing the round button at the top and it will pause the water flow.GOOD QUALITY AND WELL MADE: nicely constructed of engineering-grade ABS plastic with premium oil rubbed bronze finish for durability, effectively withstands daily rust and tarnishing, providing everyday convenience for different rinsing/filling purpose.'