Since 1964 they have been protecting the world's finest tires and wheels from theft. The McGard wheel locks manufactured in the USA are designed to meet and even exceed the safety and durability standards of the O.E.M. At this point in time McGard supplies original equipment wheel and lock for over 30 car lines all over the world. They are easy to use and come in just one piece. They function similar to the regular lug nuts but for installation and removal they do require a special key. The key is guided into the lock pattern by a steel collar which holds the key in alignment to the key patterns. The designs of the key are generated by a computer and thus there are infinite numbers of key patterns. It have a narrow pattern grove that resists any entry into the pattern. Each one of them is machined from steel that is specifically hardened to give it an extra level of security. They have three layers of nickel and one of a microporous chrome giving it a superior finish. It comes with one lock for the spare wheel and 4 for the road wheels and one matching key.