Universal Compatibility: Designed to work with a wide range of plug-in aerators including sizes M16.5, M18.5, M21.5, M24. This key is essential for any DIY plumbing kit, ensuring you can handle aerator issues in most faucets without needing professional help. Durability Guaranteed: Constructed from high-grade stainless steel, this aerator key resists bending, breaking, and rusting, offering a long-lasting solution compared to conventional plastic tools. Its robust build ensures it can tackle even the most stubborn aerators effortlessly. User-Friendly Design: Featuring an ergonomic handle, this aerator removal tool simplifies the process of removing tight or stuck aerators. No additional tools or professional assistance required, making it a handy addition to your household toolkit. Color: Silver Material: Stainless Steel Package Contents: 4*stainless steel faucet aerator(M16.5, M18.5, M21.5, M24) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.