What is another word for Allen Wrench?
Pronunciation: [ˈalən ɹˈɛnt͡ʃ] (IPA) 
An Allen wrench, also known as a hex key, is a tool that is used to tighten or loosen screws. It typically features a six-sided shape that corresponds with the hexagonal shape of the screws it's used with. There are several synonyms for this tool, including a hex wrench, Allen key, and hex driver. The term "Allen wrench" is actually a brand name that has become so widely used that it's often used interchangeably with the generic term hex key. Regardless of what you call it, this tool is essential for anyone who needs to assemble or disassemble items that use hex screws.
