FINNER FILTER HOLES: This drain plug has an anti-clog basket strainer inside, the filter is more sealed and more effective in preventing the drain from clogging, so that no objects such only rings, jewelry, dirt,etc enters the drain. TWO GASKETSOptimized and improved drain plug, increased to 2 gaskets, it fits drain holes with an inner diameter of 34mm to 40mm to avoid common problems such as inconsistent size and poor fit . Agreesto most sinks. RUST AND CORROSION PROTECTION: The inner core of the drain plug is made of brass, the spring is thickened, and the service life is extended. The basket is galvanized with ABS plastic to effectively prevent rust and corrosioncaused by household sewage and oil stains. EASY TO USE: No need to replace drain parts, just remove the original copper core, insert our drain plug, gently shake the drain plug to fit the drain hole, press the switchto stop water storage and drainage. CLEANING AND ODOR PREVENTION: The detachable basket design, remove the plug and remove the basket, you can easily remove foreign objects, it can also prevent sewers from clogging and prevent special odors.