Feature: SIZE: M14 x 1.5MM HIGH QUALITY: Made of high quality stainless steel. The drain plug comes with an aluminum crush washer; – NEODYMIUM MAGNET: Our plug uses a high strength neodymium magnet that is specifically designed to extract unwanted iron particles from your car’s engine. Neodymium magnets are some of the strongest magnets available on the planet. This gives our plug tremendous power to effectively extract these unwanted metals from your engine oil, resulting in longer engine life. PROMISED PERFORMANCE: Our drain plugs use select quality materials. Our magnet extracts fine metal particles that are too small to be captured by oil filters and also captures large metal shavings that clog filters. EASY TO INSTALL: Our plug installs in place of your current drain plug. It comes with an aluminum crush washer that is recommended to be replaced at every oil change. Simply wipe the magnet clean of debris during an oil change.