The Focused Repair Arm is the default Specialty device for the Robotics class. Targetting a friendly mechanical deployable or pet (including the Vandal robot in Demolition) with the Focused repair arm will heal it, as well as increasing any damage it may deal while being healed. The Repair Arm can also speed the deployment rate of friendly deployables being constructed. Alt-Fire increases the healing done as well as the magnitude of the damage buff, but consumes more Power/second.
A specific epic varient is available for purchase at Dome City's Robotics Mercenary Gear vendor for 6000 Tokens. Uncommon, rare, and other epic varients are rarely awarded for completion of high-end PvP and PvE missions.