Repulsor fist

The repulsor fist was a type of cybernetic mechno-arm. The device was infamous in many of the underworld brothels on Coruscant and Hosnian Prime.

Behind the scenes
The repulsor fist appeared in Star Wars Legends as the used by Bao-Dur in Star Wars: Knights of the Old Republic II: The Sith Lords. It received a mention in erotica canon in the Star Wars Erotica Databank.