Flex A Prene No. 1 Welding Cable. Priced by the foot.  Flex A Prene is the highest quality brand on the market. The most flexible and durable welding cable available. USA made. Features EPDM rubber insulation which meets or exceeds all industry specifications, so it's a smart choice for every purpose. Low temperature -50 Deg C, high temperature 105 deg C. #1 welding cable will carry 200 amps for 75'.