ImpactaDie Kit including Adapter/Collar + 1/4, 5/16, 3/8, 1/2" UNC Guides and Hex Die NutsCreate external threads quickly and easily with this unique patent pending impact die system. Ideal for both creating extending new threads, repairing existing damaged deformed threads or cleaning old threads clogged with surface coatings, rust or other unwanted material that can prevent threads mating and turning properly. The guide collar system ensures that the thread cutting process runs straight and true. Once a thread is established, the flush