drill hog 29 pc super premium cobalt m42+ drill bit set orange steel case drill hog drill hog is proud to release the newest technology in drill bits. these bits are made from solid super premium cobalt m42+ steel. cobalt has a melting point of 2,723 degrees fahrenheit! these bits will drill through the toughest steel like truck frames, stainless steel, farm implements, spring steel, grade 8 bolts, and more!