Neoperl Smart Care 1.0 Gpm / Soft Cascade Stream Faucet Aerator Pressure Compensating | Rubber Tip Easy Clean Bottom | Serious Flow Control 1.0 GPM Cascade Smart Lime Care Aerator Dual Threaded Aerator - Easy to install Water, Energy & Money Saver Rub the Silicone Bottom to remove any lime build up. WaterSense Low Flow faucet aerator