Features:1. Use durable ABS, safe to use, easy to disassemble, and long service life.2. 5 sizes of keys: These faucet release keys are available in 5 different sizes, M16.5, M18.5, M21.54, M22.5 and M24. Various sizes can meet your different needs.3. The clogged aerator can be replaced or cleaned, and the low-flow faucet can be effectively fixed, allowing you to unblock the water flow again. 4. The standard size faucet aerators, great replacement faucet aerators for Bathroom or Kitchen, ensure the smooth flow. 5. Easy to use, it only takes a few minutes to replace, saving time and effort.Notice:1.Actual color may be slightly different from the image due to different monitor and light effect2.Please allow 1-3cm deviation due to manual measurementMaterial: ABSSize: M16.5M18.5M21.54M22.5 M24includes:5 x Faucet Aerator Key Removal Wrench