- "This is an old XT-6 model, Ulic. Their appendages make great prosthetics."
- ―Cay Qel-Droma
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 File 130 (SUR1, Surgical Technology)
- The New Essential Guide to Weapons and Technology
- The Complete Star Wars Encyclopedia