TEMCo SOOW SO Cord SOO139 - 12/4 25 ft. HD USA Portable Outdoor Indoor 600V Flexible Wire Cable -40 to 90 deg C temperature extremes. Manufactured with advanced synthetic rubber compounds. Excellent resistance to flame, deformation, ozone, oils, acids and chemicals. Abrasion resistant. Oil resistant insulation and jacket. Exceptional flexbility, even in cold temperatures.