Hard service thermoplastic insulated conductors and overall thermoplastic jacket. All elastomer construction. Conductor is soft annealed stranded copper per ASTM B3-90. Temperature range from -50 to +105 deg C. For hard usage applications in accordance with NEC and for use with portable tools and lamps, pumps and portable farm equipment. Weather-resistant. 300 V - 250 ft spool. UL 62, UL1581, CSA-C22.2 No 49.