A building manager or חופשת קזינו בורנה super might have a grasp key to be able to be ready to assist tenants get into their apartment or to make repairs, while each tenant's key solely works for his or her personal lock. Some locks, such as those in an apartment building, are made to work with two sorts of keys: the key that's specific for that lock (generally known as a change key) and a grasp key, which might open that lock and the others within the constructing. When the change key matches into the lock, the tops of the master wafers are raised to the level of the shear line, however when the grasp key is put into the lock, the tops of the underside pins are additionally raised to the level of the shear line. The little springs serve to carry the pins in place. Many locks are made from the same basic parts: pins (usually 12) and springs.