50-Foot 12/3 Black Pro Glo Extension Cord with Power & Ground Check Lights - Your Name on Cord Custom Print: Your name will appear every 12 inches along the full length of each cord! CGM Light: Indicates there is continuity in the ground wire throughout the cord. Power Check Light: The plug's amber LED alerts you that the cord is "live." Ultra High Visibility Colors: Reduce tripping hazards. Visible cords are safe cords! Certifications: Pro Glo Extension Cords are UL Listed and cUL Approved for Canada.