The NEOPERL PCA Spray 0.5GPM aerator insert is pressure compensating. The pressure compensating design helps to maintain a constant and comfortable water flow regardless of pressure fluctuations. This aerator also features an anti-clogging lime green dome screen that filters sediment. The Patented single piece construction is virtually unbreakable and lime resistant.Pressure compensatingPatented single piece construction is virtually unbreakableInsert fits inside standard male and female aerator housingsMulti laminar spray streamLead freeANSI/NSF 61, ASME A112.18.1M, CSA B125, AB1953, S-152