ULTRA HEAVY DUTY EXTENSION CORD: Our 10 AWG extension cord 10 foot made with pure copper wire is a multipurpose electrical cor. Built to last for industrial grade power cable, perfect for indoor and outdoor. Flexible in cold temperature. WEATHERPROOF & FLAME RETARDANT: great for powering major household appliances, power tools, welder, air conditioner, refrigerator, space heater, saw, grinder, HVAC, power washer, as well as landscaping, lawnmower, garden tools, outdoor lights decoration, and much more. HIGH VISIBILITY, HIGH QUALITY MATERIAL - OSHA Compliant, Flexible and ultra durable vinyl covering material protects cord against moisture, water, snow, abrasion and sunlight. Our 10 ga extension cord for outside 10ft remains flexible and tangle-free under all weather conditions, and wouldnt become stiff or crack in cold weather with temperature range from -40°F to +140°F. REINFORCED BLADES with nickel coated for corrosion resistance and protect prongs from bending or breaking