Increases Vulcan Arm and Axe Boomerang damage by 15%.
If refine rate is 7 or higher, Increases Vulcan Arm and Axe Boomerang damage by additional 15%.
If refine rate is 9 or higher, Increases Vulcan Arm and Axe Boomerang damage by additional 15%.
If refine rate is 11 or higher, Increases Vulcan Arm and Axe Boomerang damage by additional 15%, reduces skill cooldown of Axe Boomerang by 2 seconds, increases Triple Laser damage by 15%.