Worry no more about your aerator being tampered with. The 1.2 GPM Dual Thread Vandal Proof Aerator cannot be removed without the locking key. Because the aerator limits the water flow through the faucet, water use is reduced as compared to the same time of flow without an aerator. It is constructed of brass to endure everyday use and has a sophisticated chrome finish that will add a touch of elegance to your faucet.