Mishimoto Magnetic Engine Oil Drain Plug is designed to remove metal fragments in engine oil, thus extending and protecting the life of your engine. The oil drain plug is constructed from billet 6061 aluminum with a powerful neodymium magnet. The magnet provides the strength to seize and collect harmful metallic fragments in your engine oil, removing them from circulation. This drain plug features a robust 24mm hex head and precise, durable threads for consistent use without fear of stripping. The oil drain plug includes a dependable dowty seal for superior protection against leaks.