DeWalt.  Professionals insist and ask for it by name.  The DeWalt Premium Extension Cords by Milspec Industries have been engineered to carry on that reputation. 

With features like abrasion resistant cold weather jackets that offer excellent performance below freezing temperatures, to high tech cord ends that have lighted “CGM” or Continuous Ground Monitoring for safety, DeWalt cords are built to perform under the most extreme jobsite conditions.  In addition, the revolutionary Locking Cord’s connector prevents unwanted disconnects when mated to any standard male plug, which can withstand a pull strength of 80 lbs.  

Safe, reliable, innovative, heavy-duty - DeWalt.  Guaranteed Tough.