The laundry water often contains a lot of clothing fibers, cotton, paper debris, hair, etc, which may cause sink blockage. The lint trap can help you solve this problem?works as a lint catcher and remover. These hose filters are made of galvanized iron, rustproof and long lasting, each trap works as a lint catcher and remover. The traps can slip easily onto end of hose, no tools needed, it is easy to install on the discharge hose and easy to remove. The traps work on a washing machine hose, the one that drains into a sink. Not applicable for stand-pipe drains or pipes that go into the wall.