Description of Chicago Latrobe Cobalt Jobber Set - 13 Pieces
Set of 13 jobber length drill bits includes inch sizes 1/16" through 1/4" in 1/64" increments. Cobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials. Gold oxide finish lubricates and provides wear resistance on ferrous materials. Self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging. Extra thick web for increased strength and rigidity compared to standard drill bits.Made in the USA.
I needed drill bits that aren't as affected by wood grain and that work just fine. In contrast to their Chinese counterparts, they drill very straight and almost without out-of-roundness. You pay a small premium, but it's worth it.
I finally saved enough money for a decent set of cobalt drills and now I wish I had done it sooner. I use them with a low speed hand drill, they cut wood easily.