appears to be new unused 

Water and oil resistant: The 600V 6 AWG SOOW bulk wire 6/3 6 Gauge 3 conductor SOOW electric wire (SOOW-Service, Oil, and Water Resistant) is designed to withstand harsh conditions, perfect for industrial/outdoor/commercial use, including NEMA 14-50 welder machine/power generator/RV outlet box/electric car charger/fryer/dryer.

Heavy duty 6 AWG SOOW cable: The portable power cable wire is extremely thick, 6-gauge great power source provides high capacity for handling higher voltage loads, resistant to corrosion, absorbs heat better and lasts longer than non-OFC wire.

Industrial grade 6 gauge SOOW electrical cable has outer rubber insulation and inside rubber jacket, making 6 AWG SOOW wire ideal for use in industrial commercial residential power generation, including motor leads, battery chargers, stage lights, and machinery.
Wide-applications: The electric 6/3 6-gauge wire SOOW bulk cable works well for distributing power and controlling circuits, temporary lighting systems and portable tools appliances, heavy-duty electrical equipment and marine electrical systems, etc. Our 6/3 600V 6-gauge SOOW extension cord for welder machine especially.

The heavy duty 6/3 wire 6 AWG 3 conductor SOOW cable is essential for supplying reliable power, connects to generator inlet box, breaker panel & wiring machinery, extension cords for high power high voltage loads equipment.