3M Water Filtration Products Model 120-L OCS Lead & Cyst Replacement Cartridge provides consistent high quality water for espresso and tea applications by reducing sediment*, cyst**, chlorine taste and odor, lead and asbestos from incoming water. The Sanitary Quick Change (SQC) encapsulated design allows for fast and easy change-outs without the need for a filter wrench. Use in OWS120-L systems.