Package includes: 12 pieces of faucet filter aerators in sizes 16.5mm, 18.5mm, 21.5mm, and 24mm to meet various faucet size requirements. 5 pieces of aerator wrench tools for removing and installing different sizes of faucet aerators. Easy installation: Faucet aerator replacement set comes with wrench tools, allowing quick removal and installation within minutes. No plumber required. Made of high-quality ABS material: Aerator wrenches are constructed from durable ABS plastic, strong and sturdy for long-term use. Wide application: Flow restrictor aerators fit kitchen sink faucets, bathroom taps, and lavatory faucets. Compatible with standard threaded faucets and common aerator brands. Non-splashing performance: These faucet aerators mix water and air to produce a smooth, bubbly flow, reducing splashing and conserving water without sacrificing water pressure. Ideal tool set for replacing or cleaning clogged aerators, helping restore proper water flow and improve faucet performance.