Plexor is a term used in the medical field that refers to a percussion hammer used by doctors to examine a patient's reflexes. Although plexor is commonly used, there are several synonyms for this term that are used interchangeably, including reflex hammer, percussion hammer, and neurological hammer. These tools are essential in neurological exams because they can identify any damage or abnormalities in the nervous system. Other variations of these tools include Babinski hammers, Taylor hammers, and Queen Square hammers. While the names may differ, the purpose of these tools remains the same, to evaluate a patient's neurological function.