Description of Chicago Latrobe Cobalt 15 Piece Increments
Set of 15 short length drill bits includes inch sizes 1/16" through 1/2" in 1/32" 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.
When I tried these industrial and scientific cobalt drill bits, I was blown away by their durability and precision. THEY cut through metal with ease and maintained their sharpness over a long period of use .The 15-piece increments set also provided a variety of sizes to choose from. The only downside is the higher price point compared to other drill bits in the market, but the quality definitely justifies the cost..