1 liter / 32 oz. water bottle wrench

After securing the lid to the water bottle when it's cold and filled with cold liquid just enough to keep it from leaking, you find, at the end of the day, pulling the empty water bottle out of your hot car, that you can't get the lid off. This wrench solves that problem. included are three insets for 8mmx3mm round magnets so it can easily be stored on the refrigerator door.

Update 27.Feb.2022: I've added a small “fit test” model so you can print it out to test for fit. If it's close, but not usable, you can use this model as a guide to scale the main wrench to fit your bottle. Keep in mind that the size of the magnet insets will also be scaled.