The structure of frequently used locks can be described as complex. Generally, the structure of a lock consists of a cylinder, a pin, a spring, a bolt, a key, etc. This kind of lock is the most commonly used lock.
Nowadays, most of the lock cylinder is made of harder metal. The locks used in daily life are all made of brass. Brass is not easy to rust, and metals such as Brass and iron will not stick together. Brass is relatively hard and has good toughness and is not easy to break. Another advantage of using brass lock cylinder is that it is not easy to oxidize. This is why brass is chosen as the lock cylinder.
