Upgrade your bathroom or kitchen faucet with this full flow Neoperl aerator. Enjoy a larger, whiter aerated stream, soft to the touch and non-splashing. NSF-61 approved. Dual threaded design (male and female washers provided) makes for easy installation. Aerators are found in nearly all kitchen and lavatory faucets. An aerator is a key component in the overall performance of the faucet, and aerator streams are the typical choice for residential faucet applications. Upgrading your aerator can reduce splashing, make your faucet more comfortable, save water, and even help meet local plumbing standards.