This trip wire has two runs of wire of each colour, yellow and olive drab, 40' each, 160' total, on a wooden spool.It's a must-have item for any backpack, survival kit and camping trip, as it's a perfect pocket size roll at only 2-1.9cm long.There are 1001 uses for this wire including emergency repairs, snares, fishing line, not to mention the original use! US Made!