The Oil Drain plug has a magnet to collect debris from your engine oil. Simply clean off the magnet and reinstall during each oil change.

Common Fitment for the following sizes:
-M12x1.5mm (Honda/ Mazda/ Mitsubishi)*
-M14 X1.5mm (Acura/ Chrysler/ Dodge/ Ford/ Honda /Hyundai/ Izuzu/ Jeep/ Kia/ Mazda/ Mitsubishi)*
-M16x1.5mm (Subaru)*

*Please make sure to check your thread pitch before purchase

Comes with the following:
-Magnetic Bolt/Plug
-Washer