Narwhal 1/8 Inch Cobalt Drill Bits (13 Pack - Industrial Grade M35 Cobalt) 2.55" Length & 135 Degree Split Point for Drilling Into Metal, Hardened & Stainless Steel, Cast Iron, & More!

Good quality and worked well

These seem to be good quality drill bits. I use them on steel and stainless steel and they drill just fine.

I bough these for a job, and didn't really expect much from them, but I'm actually very impressed. For cheap chinese drill bits they did an exceptional job and actually lasted a pretty decent amount of time. We had to drill a few thousand holes through 14 guage galvanized steel sheets into 1/8" galvanized steel square tube. I was able to get about 100-150 holes drilled usinga high speed drill before the bits started to get dull.Would definitely buy this brand again.

So i thought they were carbide bits but they were cobalt. Doesn't really matter they did a good job of drilling and they come in a nice package so the ones I didn't use aren't floating around my toolbox all willy nilly. Good quality if im in need of another handful of a different size I would consider buying this brand again.

Worked as needed, stayed sharp for the 26 holes I drilled in metal square tubing.

Buyer beware! Bit broke half way thru drilling these are not worth what they cost! These bits may ne ok if your need to drill thru water or sand but that's about it. I should have read the other numerous reviews about bits breaking. This caused my vehicle to be down thru the weekend and had to take off Monday to go get a quality bit and finish job!

worked great low speed went right through hard steel plate 1/4

Cobalt is the way to go.