Package includes: 12 faucet filter aerators in male 16.5mm, 18.5mm, 21.5mm, and 24mm sizes to fit various faucet types. 5 aerator wrench tools for removing and installing different sized faucet aerators. Easy installation: Faucet filter replacements come with wrench tools for quick removal and installation within minutes. No plumber required. Made of high-quality ABS material: Aerator wrenches are made from durable ABS plastic for strength and long-lasting use. 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 reducing water splashing and conserving water without sacrificing water pressure. Ideal tool set for replacing or cleaning clogged aerators to help restore proper water flow.