Being prepared is a common survival tactic, but I can’t count how many times I needed something for a car breakdown or road emergency and didn’t have it. Beyond the basics, like an air inflator, a screwdriver set, a road emergency kit, jack stands, and paper towels, there are essential tools you should always keep on hand in case you need to repair your vehicle or someone else's. Here are six Harbor Freight mechanic tools I always keep in my car’s trunk so that I am ready when something goes wrong.