Water Outflow - Stream with Bubble. Product Feature - WATER SAVING at 4-6 Litre per minute. Important Notice: Please Measure the Size of the OriginalAerator Core Carefully Before Order, Making Sure the Core can Fit In the Shell.Because Shell Thickness May Vary that Makes the Core not beinngable to be Assembled. HOW IT WORKS? By introducing running water go through the aerator, it is mixed with air- so called bubbled , which makes the water flow straight and calm. Whats more, it dramatically SAVES WATER. When the pressure of tap water is over or unstable, an aerator can controls the flow to remain in a sustainable range-2L(itre)/3L/4L/6L/8L per minute. *Water Flow is regulated at a constant flow when water pressure goes over 3 Bar.Under 3 bar water pressure, there is no water saving effect and we suggest the customer to choose a lower water saver.* IMPORTANT NOTICE CUSTOM POLICY REQUIRES ALL BUYERS TO PROVIDE AUTHENTIC FULL NAME IN CONTACT INFORMATION. PLEASE CHECK SPECIFICATION CAREFULLY BEFORE ORDER, ASK US IF ANY QUESTIONS. PLEASE CHECK AND MAKE SURE YOU HAVE THE CORRECT FULL NAME, ADDRESS, POSTAL CODE, PHONE NUMBER IN CONTACT. WE BEAR NO OBLIGATIONS IN PROBLEMS CAUSED BY INCORRECT CONTACT INFO. FOR BRAZIL BUYERS, PLEASE LEAVE US A MESSAGE WITH YOU PERSONAL TAX NUMBER(OR COMPANY TAX NUMBER) WHEN PLACING AN ORDER.