The Drill Doctor 500 x is the ultimate drill bit sharpener for the serious do-it-yourselfer with the sharpening power needed to restore dull or broken drill bits. Its compact design is built tough to last, and is backed by a three year warranty. The Drill Doctor will sharpen a large range of dull or broken drill bits, including standard-twist bits, high speed steel, carbide, cobalt, and TiN-coated. The Drill Doctor will also sharpen and create BACK-CUT? split-point bits for faster penetration and less drill bit ?wandering?. The Drill Doctor is fast and easy to use - you can sharpen bits with precision in less than 60 seconds. Available at The Home Depot. Tools and Hardware