Features: General Pipe Cleaners 50’x1/2″ Flexicore Cable w/ Male & Female Ends. Wire Rope Center ConstructionHeavy-gauge wire coiled tightly around 49-strand aircraft-type wire rope and heat treatedHas unequalled strength and the right amount of flexibilitySo tough it carries a one-Year Limited against defect or breakageFlexicore Patent Nos. 2, 244, 735 and 2, 849, 870From the ManufacturerHeavy-gauge wire coiled tightly around 42-strand aircraft type wire rope and heat treated. Has unequalled strength and the right amount of flexibility.