The 500-X transport represented a class of cargo shuttle vehicles.
Visually, the 500-X bore a resemblance to the Lambda-class T-4a shuttle. Lacking weaponry and equipped with a less-than-ideal navicomputer, it was considered outdated by the year 11 ABY.
The Galactic Empire utilized these shuttles, and the Kessel fleet also operated at least one. A 500-X shuttle belonging to the Kessel fleet was commandeered by Han Solo, Chewbacca, and Kyp Durron, who used it to flee to the Maw Cluster. Upon finding the [Maw Installation], they renamed their captured shuttle to Endor.