Package includes: 12 pieces of faucet filter aerators in sizes 16.5mm, 18.5mm, 21.5mm, and 24mm to meet various faucet size needs. 5 pieces of aerator wrench tools for removing and installing different sizes of faucet aerators. 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 threaded faucets. 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 conserve water. Ideal tool set for replacing or cleaning clogged aerators, effectively restoring proper water flow.