Compared to conventional aerators, it saves about 40% of water and energy while producing a pleasantly soft and splash-free stream. The patented design mixes a lot of air into the water even at very low flow rates. Air that doesn’t have to be paid for makes the water stream from the aerator pleasantly full and soft. The distinctive feature of the Long-Life aerator is the externally visible, coarse-meshed screen lens. This unique arrangement of screens ensures that after the faucet is turned off, only a small amount of water remains in the RST aerator. This effectively reduces limescale buildup, unlike conventional aerators where the slowly evaporating residual water inevitably leads to rapid and unhygienic limescale formation. With the hose extension, the water stream can be conveniently directed to any spot in the sink, making it ideal for kitchen sinks and faucets with high spouts. Suitable for all faucets with M24x1 internal thread and M22x1 external thread.