Functions: prevent splashing shape the water stream coming out of the faucet spout, to produce a straight and evenly pressured stream conserve water and reduce energy costs reduce faucet noise increase perceived water pressure (often used in homes with low water pressure). This can be used in almost each and every Indian tap/faucet. it can be used as a substitute. These Aerators can be used to increase water pressure and CAN NOT BE USED FOR WATER SAVING AERATORS