Gamber johnson 9 in mongoose locking slide arm with motion attachment USED

Used condition. Removed off decommissioned police vehicles. These are designed to mount to a gamber Johnson branded Riser tube and provides an adjustable swing arm to mount and move a laptop specific Docking Station. Extends out 9 inches and has a motion mounting attachment. 
We have multiple in stock and may not receive the exact pictured unit. All have cosmetic wear including any of the following: scratches, scuffs, dings, light rust grime etc. No hardware is included but all handles are in tact and included.