XT-6 droids were a series of service droids used around 4000 BBY. Their limbs could be adapted to serve as prosthetic replacements for injured Humans. During the attack on Iziz, Cay Qel-Droma lost his left arm and replaced it with that of one such droid.
- "Straight from the Horse's Mouth: A Guide to the Star Wars: Tales of the Jedi Universe, Part 1" — Star Wars Insider 26
- "Straight from the Horse's Mouth: A Guide to the Star Wars: Tales of the Jedi Universe, Part 3" — Star Wars Insider 28
- The Official Star Wars Fact File130
- The New Essential Guide to Weapons and Technology
- The Complete Star Wars Encyclopedia