This nickel bronze deck plug is available in sizes to fit 2" (50), 3" (75) and 4" (100) pipe. It is topped with a threaded, polished nickel bronze scoriated cover that creates a watertight seal. The cover requires a spanner wrench for removal. A wide flange version (fig. dx4890) is available for installation in floors that will be surfaced with waterproof floor coverings.