5" SDR 13.5 Smoothwall HDPE Black Conduit without Pull Tape, 500 feet on a continuous reel. Manufactured from flexible HDPE for direct burial, aerial, trench, plow, or bore installs; continuous lengths reduce joining costs; excellent low-temperature performance; long-term cable protection from shifting ground, rock and root impingement. (Description taken from distributor product listings and Dura-Line Smoothwall technical documentation.)