Originally Posted by wstar

Metric oil drain plugs

The website is atrocious to navigate. The correct size is the ones labelled 1040M and 1040SM on that page. The 1040M is a regular magnet and goes for $3.45, the 1040SM is $10.00 and has a neodymium magnet.

Edit: link for Neodymium info, since I've mentioned it twice here and maybe not everyone's into magnets: Neodymium magnet - Wikipedia, the free encyclopedia