P Traps and S Traps are important additions to plumbing pipes that are used to prevent sewer gases and other dangerous gases from escaping outside through the drain of a fixture. Sink traps also tend to capture heavy objects (such as jewlery) that are accidently dropped into the sink along with hair, sand and other debris. Check out the various finishes including chrome traps, bronze traps and nickel traps. You can also choose from Westbrass traps and Kohler traps if you are unsure of which manufacturer to use.