Drill Hog is proud to release the newest technology in drill bits. These bits are made from Hi-Molybdenum M7 which has a melting point of 4,753 degrees Fahrenheit! These bits will drill through the toughest steel like truck frames, stainless steel, farm implements, forgings, spring steel, grade 8 bolts, and more! Proudly made in the USA. Drill Hog includes a Lifetime Warranty to the original purchaser.