The hexagonal crowbar is a hand tool designed for prying, lifting, moving heavy objects or for demolition work. Its main distinguishing feature lies in the profile of the tool body, which is hexagonal, not round or flat. This hexagonal shape allows a much firmer and more secure grip than a round profile, even when working with gloves or dirty hands. It also provides surfaces on which a wrench can be fitted and the tool can be rotated for increased leverage or for more precise handling if required. The hexagonal profile also increases the overall bending and torsional rigidity of the crowbar, the technical term for twisting, and prevents the tool from rolling once it is rested on a flat surface. The ends of the crowbar are usually shaped for specific tasks. One end tends to be curved, often with a groove for driving nails, while the other may be flat like a chisel or pointed for driving through materials.