The HPS Magnetic Oil Drain Plug is an effective and easy-to-install solution to keep your vehicle running strong. Small metal particles can become embedded in your bearings and cause damage to your vehicle's vital components. The HPS Magnetic Oil Drain Plug uses a very strong 5000 gauss neodymium rare earth magnet to pull the metal particles away from the oil. The bolt is made from 304 stainless steel, making it extremely durable and corrosion resistant. The included copper crush washer ensures a proper seal.