B2 battle droid dispenser
From Wookieepedia, the Star Wars wiki.
Like its smaller cousin, the dispenser was used by the Confederacy of Independent Systems to continually deploy B2 super battle droids through four large hatches. Though not as common as their smaller, presumably cheaper counterparts, many of them were encountered by the clone commandos of Delta Squad during the Clone Wars. The dispensers had their own means of propulsion, and were used as boarding craft by the CIS in their attempt to steal the Prosecutor.
[edit] Behind the scenes
Like the B1 battle droid dispenser, it is unclear whether the units actually had the capacity to produce an unlimited number of droids.
