Designed for drilling in extremely hard materials, including stainless steel. Cobalt drill bits have a great resistance to heat and friction providing a longer tool life. Century 135 degree quick-cut points are self-centering and penetrate faster with less pressure. Cobalt drill bits offer 14 times Life Rating when compared to standard 118 degree point drill bits.
As someone who hesitates when buying industrial tools, my analysis of THIS product showed that it`s definitely a cut above the rest.The cobalt material makes it incredibly durable and long-lasting saving costs in the long run. The strong performance and precision make it a top-notch choice for industrial needs. the only downside is the higher price point compared to other bits, but the quality justifies it. Overall, a great investment for any industrial and scientific project..
makes holes in everything, even hardened steels - as in the Russian Mosin rifle (drills the rear sight from the same steel as the barrel itself). Buy with confidence! Update: There was a problem with the concrete wall. Then I used a regular concrete drill and it worked.