Review on Magnetic Stash Safe for Cars - Vacuum Sealed Secret Compartment - Assorted Sizes (Extra Large) by Justin Garcia

Attached it to my truck frame and put spare keys in it. It didn't seem very strong so I tested it in several places until I found the best. I also tested it on steel sheets. My 10 year old could use it with one hand. I don't drive off-road and spend most of my time driving around town and on the freeway. I've checked the box every few days to make sure it's still there. It lasted less than two weeks before falling. It was necessary to use stronger earth magnets. The whole thing cost me over $200 with a replacement box and keys.