Repulsor anchors were a component which could be equipped to droids. The droid HURID-327 had a red, disc-shaped, counter-weight producing repulsor anchor on each of its shoulders, with the left anchor being larger than the right.
Behind the scenes
Repulsor anchors first appeared in Star Wars: Episode VII The Force Awakens as part of the droid character HURID-327, with their first reveal being a brief appearance in the film's first full-length trailer released two months before the film in 2015. Neither the anchors or the droid were identified in the film, but both were later named in Star Wars: The Force Awakens: The Visual Dictionary, a reference book written by Pablo Hidalgo released the day after the film.
- Star Wars: The Force Awakens: The Visual Dictionary (First identified as Repulsor anchor)