Description of Chicago Latrobe Cobalt Jobber 29 Piece
Set of 29 jobber length drill bits includes inch sizes 1/16" through 1/2" 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.
Using this set our team found that it was incredibly durable and able to drill through tough materials with ease .The cobalt construction ensured longevity and the set included a variety of sizes to fit our needs. The packaging also made it easy to keep the bits organized. Our only con was the price, but the quality more than made up for it..
I had a project where I had to drill through a metal plate on an army trailer that I was afraid of. I bought these bits for a project and now drilling metal is much easier. My deck drilling went smoothly - almost like plywood drilling! Metal shavings flew! These bits are very well made and designed for metal cutting (material and angle). I expect them to last and give me years of good service. The case is very nice and sturdy. My only regret is that I regret not having bought them rather than…
Pros
Gold oxide coating lubricates and adds wear resistance to ferrous metals