The Defender Security Lock boasts an affordable price and strikes the perfect balance between temporary and permanent use. Installing it takes just four screws, which means uninstalling it leaves only four small, easy-to-fill screw holes behind. Even better, it can withstand up to 800 lbs. of force, and there are no keyholes to be picked.
We reviewed the top locks on the market, keeping your varied security needs in mind. The Defender Security Lock may be the best overall pick, but read on for insight on specific needs like portability, keyless entry, smart locks, and deadbolts.