Package includes: 12 faucet filter aerators in male 16.5mm, 18.5mm, 21.5mm, and 24mm sizes to fit various faucet types. 5 aerator wrench tools for easy removal and installation of different aerator sizes. Easy installation: Comes with wrench tools to complete removal and installation in minutes. No plumber needed. Installation can be done within 1 minute. Made of high-quality ABS material: Aerator wrenches are durable, strong, and long-lasting. Resistant to breakage. Wide application: Flow restrictor aerators fit kitchen sink faucets, bathroom taps, and lavatory faucet spouts. Compatible with Neoperl, Moen, Kohler, American Standard, Danze, and Grohe aerators. Non-splashing: These faucet aerators mix water and air to create a smooth, bubbly flow while restricting water output without reducing pressure. Helps prevent splashing and conserves water. Ideal tool set for replacing or cleaning clogged aerators, fixing low water flow issues, and restoring smooth water flow.