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 aerator wrench tools for removing and installing different aerator sizes. Easy installation: Faucet filter replacements come with wrench tools that allow quick removal and installation within minutes. No plumber required. Made of high-quality ABS material: Aerator wrenches are constructed from durable ABS plastic, ensuring strength and longevity. Wide application: Flow restrictor aerators fit kitchen sink faucets, bathroom taps, and lavatory faucet spouts. Compatible with standard threaded aerators from brands such as Neoperl, Moen, Kohler, American Standard, Danze, and Grohe. Non-splashing design: These faucet aerators mix water and air to produce a smooth, bubbly flow while restricting water output without reducing pressure. Helps prevent splashing and conserves water. Ideal tool set for replacing or cleaning clogged aerators, effectively restoring proper water flow.