A type of labor droid was the tracked labor droid, which was also referred to as a tractor droid, tractor-robot, or colloquially as "trakkie". These droids resembled protocol droids but were mounted on treads instead of legs, and they featured two extendable arms. Tractor droids possessed sufficient strength to forcefully bring down moving skyspeeders from the sky.
An example of an older tractor droid was FE-9Q.