Allen wrench in an L-shape with a tip size of 1. A hex key is ideal for all types of use by every professional mechanic, plumber, carpenter, electrician, as well as for home use.

The hex keys are formed from a single piece of hexagonal bar made of hard steel with rounded ends that fit comfortably into similarly shaped screw sockets. It is bent at 90 degrees, forming two arms of unequal length that resemble the Latin letter "L".