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 replacements come with wrench tools that allow quick removal and installation within minutes. No plumber needed. Made of high-quality ABS material: Aerator wrenches are constructed from durable ABS plastic, providing strength and long-lasting performance. Resistant to breakage. 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 reducing water usage without sacrificing pressure. Helps prevent splashing and improves water efficiency. Ideal for replacing or cleaning clogged aerators and restoring proper water flow.