Which key Cannot open a lock?

A “monkey wrench” or “pipe wrench” is a tool, not a key, and it cannot be used to open a lock. A monkey wrench is an adjustable wrench with smooth jaws, typically used for turning soft iron pipes and fittings with a rounded surface. It is not designed for manipulating the internal mechanisms of a lock, and attempting to use a wrench in this way would likely result in damage to both the lock and the tool. Keys, on the other hand, are specifically designed to operate locks and are crafted to match the lock’s internal configuration. If you encounter issues with a lock, it’s recommended to contact a professional locksmith in North Miami for proper assistance.