Abstract: A device for use in securing cargo in a stationary position on the bed of a truck or similar vehicle is disclosed. The device includes a movable partition having spring biased locking pins on the outer ends thereof which may be releasably secured in any of a series of holes spaced at intervals along a railing attached to either side of the length of the truck bed. Upon operation of a handle mechanism located in the central upper portion of the partition, the locking pins may be unlocked, allowing the partition to be moved on caster wheels mounted for movement along the interior length of the railings until the desired position is reached at which point the handle is released, causing the pins to lock into the adjacent openings in the railing.