Just when you thought covers couldn't get any better than a BakFlip G2, BAK Industries proudly introduces the BakFlip HD all-aluminum hard-folding tonneau cover. Built to outlast your truck, the "heavy-duty" BakFlip is made from aircraft-grade aluminum; it has powdercoated components and a thicker core to endure 400 pounds on top of it. If you're the type who expects the best, then the BakFlip HD is the tonneau cover for you but--should it fall short--BAK Industries offers a 2-year factory warranty.