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.