7Pcs 8PK-022 0.7~3.0mm Miniature L Shaped Hex Key Wrench Screwdriver Kit Tool | Hallroad Lahore
A hex key, Allen wrench or Allen key, is a simple tool used to drive bolts and screws with hexagonal(a hexagon is a six-sided polygon or 6-gon)sockets in their heads. The tool is usually formed of a single piece of hexagonal rod of hard steel, with blunt ends that are meant to fit snugly into the screw’s socket, bent in an “L” shape with unequal arms. The tool is usually held and twisted by the long arm, creating a large moment at the tip of the short arm. Reversing the tool lets the long arm reach screws in hard-to-reach places.