Grav-crane

Grav cranes were a vehicle produced by the Tagge Company which were in use shortly before the Clone Wars. Condensation gathered on a grav crane and dripped onto the Duros Bounty hunter Cad Bane whilst he was working for the Bothan crime lord Akris Ur'etu attempting to kill a Jedi imposter hired to kill Akris.

Behind the scenes
Grav cranes were first mentioned in the short story Reputation written by Ari Marmell and illustrated by Tom Hodges which was published in Star Wars Insider 136 in 2012.