Package includes: 12 faucet filter aerators in male sizes 16.5mm, 18.5mm, 21.5mm, and 24mm to meet various faucet size needs. 5 aerator wrench tools for removing and installing different aerator sizes. Easy installation: Faucet filter replacements come with wrench tools, allowing quick removal and installation within minutes. No plumber required. Made of high-quality ABS material: Aerator wrenches are durable, strong, and long-lasting. Wide application: Flow restrictor aerators fit kitchen sink faucets, bathroom taps, and lavatory faucet spouts. Compatible with standard aerator brands. Non-splashing design: 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.