www.ihshotair.com/products/seam-rover-dd The Miller Weldmaster Seamrover DD is the world’s only dual-direction hot air welder. For the first time, contractors can now weld walking forward to keep their path and the seam in view the entire time. Along with its patent-pending hammerhead nozzle, flexible core press wheels and GPS tracking, the Seamrover DD is redefining hot air welding safety and efficiency. For more information about the Seamrover DD, visit .