Eureka! Replacement Junction Tube for Timberline 2 and 4 Series Tents Keep your Eureka! Timberline tent in top shape with this replacement Junction Tube  great for updating worn, damaged or missing parts. Junction Tube fits the Timberline 2, Timberline 2XT, Timberline 4, and Timberline Outfitter 4 tents (does not fit SQ models that use a DAC Frame). For best performance, replace worn or missing poles on your Eureka! tent with genuine replacement parts. Includes one Junction Tube The Eureka! brand began in 1895 with rugged canvas wagon covers to custom camp tents. Eureka! later made history as the tents used by the first all American Mt. Everest expedition explorers. Today, the brand makes tents, sleeping bags, and more.