Silca HX-2 Travel Hex and Torx Key Kit. Few tools are used as frequently and can cause as much heartache or wasted time as the seemingly simple Hex and Torx keys. Its one of the first things you notice at the top levels of motorsport tools or in the toolboxes of Pro-Tour mechanics: extremely high-quality tools. The reasoning is simple better tool fit leads to better feel and confidence for the mechanic as well as a significant reduction in the likelihood of damaging exotic fasteners made from Titanium or Aluminum.