Torx wrenches and bits are sometimes called star bits or star wrenches because of the distinct star-shaped pattern. The unique six-point design was created by Camcar Textron. \
Because that six-pointed head is somewhat fragile, it's not a good idea to attempt to use a Torx wrench on an Allen screw. Doing so threatens damage to the tool itself, which means you will need to purchase a new Torx wrench in addition to an Allen wrench. \