ABOUT NAIDEV MOVABLE KITCHEN SINK AERATORNAIDEV kitchen faucet head uses high-quality ABS material at the thread so it will not easily damaged even if you adjust it at any angle. The water outlet is made of stainless steel to make the water more pure and pollution-free99% OF THE TAPS ARE AVAILABLE. Whether your faucet is internal thread or external thread, you could choose our faucet headInstallation is very easy. Suitable for kitchen and bathroom faucet replacementTHREE MODES ADJUSTABLE1.WASHING DISHES:You could choose Plus Shower, washing more clean and no splash2.WASHING FRUITS:You could adjust shower modes, it is gentle to washig fruits3.DRINKING WATER:When you drinking water you can adjust plus mode more suit for put waterHOW TO INSTALL?INTERNAL THREAD INSTALLATION: The First remove the original bubble former, then put the washer and screw the kitchen faucet. Completed.EXTERNAL THREAD INSTALLATION: The First remove the original bubble former, put the white washer in the adapet and screw on the adapter(white one). Then put black thick washer in the connection and the screw the kitchen faucet.Type:Sink Sprayer AttachmentMaterial: Full copper sink nozzle head + stainless steelSurface:Multi-layer plating process, Anti-corrosion & rust-proofCompatible: Outer thread M22(21.5-22mm), inner thread M24(23.5-24mm)