During the Clone Wars, the Secret Service of the New Mandalorian faction used this collar to torture prisoners. The Zygerrians used them to keep slaves under control. At the time of the Galactic Civil War, captured Wookiees were usually forced into chain groups with a slaving collar around their necks by Trandoshan slavers. Usually the lowest ranking member of the slaver patrol had to place these collars around the Wookiees' necks — a very dangerous job.