White plastic for use on standard kitchen faucets with in side or outside threads 55/64-27 female thread with 15/16-27 thread male adapter.
California residents see Prop 65 WARNINGS
- Turn off water supply leading to faucet
- Remove old aerator
- Use both washers on faucets with in side threads
- Use only the thin washer on faucets with outside threads
- Run water to test for leaks