UL LISTED, meets OSHA requirements. These all-weather rubber 
trouble lights are designed for use by contractors and industrial personnel, 
providing an all weather trouble light made for outstanding performance in 
extreme climate conditions at temperatures from -580F to +221 OF. One-third 
lighter than ordinary jackets, PRIME-FLEX rubber cords provide superior 
resistance to sunlight, ozone, cracking, oils and chemicals. Are outstanding in 
resistance to abuse, rough handling and wear under the most severe operating 
conditions. Professional Grade TPE-Rubber Jacket, 3 Conductor Grounding.