Titanium Drill Bit Set 5PCS 1/2" HSS Jobber Drill Bits, Premium 4341 High Speed Steel Drill Bits Set with 3/8" Reduced Shank for Drilling on Mild Steel, Copper, Aluminum (1/2"(5PCS))

I keep two full range (1/16 -1/2) sets of bits for my hand drills—one for wood and plastics; the other for metal—and another premium set at my drill press. That may sound expensive, but I think it has saved me money by not breaking expensive metal bits on wood projects and not dulling wood level bits on metal projects. I’m sure I’m not the only one to do this.All that to say, I’m in agreement with others. You’ll be happy with these for wood, but don’t waste them on metals.

I had hoped these would fit in my pin vise for model building, but no claim about pin vises, so I have to be fair about my disappointment in that arena. Claims can drill steel, copper, and aluminum. Did very well with the first hole in steel, but was "cherry red hot" before the end of the 2nd hole in the steel and wouldn't go through. Didn't even bother to try on aluminum, and no copper to try, so can't rate aluminum or copper. However, both my husband and I agree that it is very good on wood! I'd give 3-stars for its failure on steel, not fitting a pin vise, and since it doesn't meet the claims on steel; I'd give 5-stars on wood; therefore, I'm giving it a 4-star overall!

Pero según dise que son para metal y realmente no sirven para nada o quisas son para madera ,pero en ese caso no especifica bien para que son

They are drills. A good price, but just drill bits.

Not brittle like Harbor Freight and Tool bits.

All they do is squeal when I try to use them. They seem to be sharpened incorrectly or something. Worst bit I've ever tried.

as described, would buy again

will not go through metal