A hex key or Allen key is an easy tool utilized to operate bolts and screws with hexagonal sockets in their foresight. The tool is generally formed of a fixed steel hexagonal rod, the final part of which is utilized to suit snugly into the socket of the arched screw in the shape of an "L" with the primary arms. The device is usually gripped and turned with a long arm, forming a solid twist on top of the short arm. Hex Key HHK14081 used to mark the L-shaped short end at the bolt's head and press under the L's long side to rotate the bolt.