Definition:
An Allen Wrench is a special "L" shaped six-sided wrench, coming in various sizes, that fits into a recessed hexagonal socket hole in the end of an allen bolt.
An Allen Wrench is a special "L" shaped six-sided wrench, coming in various sizes, that fits into a recessed hexagonal socket hole in the end of an allen bolt.
Also Known As: hex key, hex head wrench
