WaterSense Listed. Neoperl 1.5 gpm aerator ------------(Cache - The hidden aerator threads directly (and disappears) into the faucet spot, making it vandall proof by design. Removal and installation is easy with a cache key. Cache aerators have been used by OEMs since 2006.. -----------------------WaterSense Listed. Neoperl 1.5 gpm, dual thread kitchen or bathroom faucet aerator. Best quality and performance at a lower cost. NSF 61 approved. Faucet Aerators introduce air into the water stream to produce a larger, fuller, whiter, softer and nonsplashing water stream.---------------------------------Aerated streamAerators introduce air into the water stream to produce a larger and whiter stream soft to the touch and non-splashing. Aerators are the usual choice for residential faucet applications. ------------------Specifications• Standard size M24 x 1 ------------Features: • Low Flow Rate | 1.5 gpm • Threads directly within the faucet spout • Soft Aerated Low Flow • Domed inlet screen for maximum aerator life • Water, energy & Money Saving • Easy to install • Vandal proof by design----------------------************Comes complete with Installation key.***************Cache Aerator Wrench/Key - standard cache threads.Allows to easily install or replace cache aerators, prevent tampering with faucet attachments. Fits standard standard m24x1 size.