A wheel lock is a heavy piece of metal that prevents your vehicle from moving. The alloy steel construction makes the lock resistant to sawing, prying, hammering, and Freon attacks. This helps protect your vehicle from theft because a visible anti-theft deterrent is very difficult to break. The wheel lock not only prevents the wheel from moving, but it's also a great visual deterrent that is likely to keep thieves away. It helps make your car more difficult to steal, causing potential thieves to look elsewhere.