This hand tool is very familiar used around the world.It have a various typical names likes Allen Wrench,Zeta Key,Hex Keys, Allen key and Hex Wrench.All this name refer to the same tool.The different area call for different name.It common thing for hand tool name.

Basically,this tool design is ” HEXAGON ” “six points” bit or cross section.It use to drive task for tight or loose the screws and bolts that have a head of hexagon socket.This type of head common use at all machine or equipment or device.We can found the hex head type in anywhere places like at home,garage,school,factory,furniture,bicycle etc. read more