The bat'leth is a long and curved ceremonial sword with handholds on the back. It was created by "" visual effects producer, Dan Curry, for the "Star Trek" television series. It is mainly used within "Star Trek" fiction by the Klingons, a race in the series. It is thought to be a highly noticed image of "Star Trek" and copies are widely available online as highly collected things and as a part of costumes. They have also been used in crimes.