Bracers of Najus

An ancient Sith relic created by the Sith Lord Najus to be used as a weapon against the Jedi. The resting place of the Bracers of Najus were hidden on the world of Leritor beneath its Bleaks mountain range. There it had lain for millenia, trapped within the wreckage of an ancient starship. It was believed that the bracers were soley created as an anti-Jedi weapon and thus could not harm another Sith. Profex Rynalla of the University of Sanbra made it her mission to find and locate the bracers, primarily for her own reasons. During her excavations she actually found it but the site was destroyed in a struggle which led to the bracers being lost once again in the mountains.

Source

 * Star Wars Gamer magazine