Take power with you anywhere as this extension cord provides easy access to power on the go. The Southwire 25 ft. 12/3 SJTW extension cord with lighted ends is made for safety and easy visibility in a variety of environments. This cord is made of all-copper wire and is designed to work alongside heavy-duty equipment and tools. Additionally, it is rated to handle temperatures as low as -40F and as high as 140F.