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 aerator replacements come with wrench tools, allowing quick removal and installation within minutes. No plumber required. Made of high-quality ABS material: Aerator wrench keys are constructed from durable ABS plastic, providing strength and long-lasting performance without cracking or breaking. Wide application: Flow restrictor aerators fit kitchen sink faucets, bathroom taps, and lavatory faucet spouts. Compatible with standard threaded faucets and common aerator brands. Non-splashing design: These faucet aerators mix water and air to create a smooth, bubbly flow while conserving water and minimizing splashing. Helps maintain water pressure and improves flow performance. Ideal for replacing or cleaning clogged aerators and restoring proper water flow.