Bearing damage is a serious concern for any high-performance or high-mileage engine. Mishimoto Magnetic Oil Drain Plugs remove metal fragments in engine oil, thus extending and protecting the life of your engine. These oil drain plugs are constructed from billet 6061 aluminum with a powerful neodymium magnet. The magnet provides the strength to seize and collect bearing or other harmful metallic fragments in engine oil, effectively removing them from circulation. This drain plug features a robust 24 mm hex head and precise, durable threads for consistent use without fear of stripping. Mishimoto Magnetic Oil Drain Plugs include a dependable dowty seal for superior protection against leaks. This 1/2inx20 UNF Mishimoto Magnetic Oil Drain Plug is perfect for a wide range of applications and includes the Mishimoto Lifetime Warranty