Review on Metal and Plastic Drill with Titanium Coating by Patrick Burns

I think if you just need something to punch holes in wood or plastic they'll be fine, but we're in the middle of an assembly vehicle and hundreds of 1/8" holes to be drilled in sheet aluminum and rectangular steel tubing. These drills were only good for about a dozen holes in aluminum plate before dulling, and fewer than a dozen holes in steel each. I won't be buying them again, for what we're trying I'm happy to spend more on bits that can drill steel more efficiently.