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!

These bits are working great for me...still using first one and have poked at least 70 holes in thinner stainless in a shipping container. I just poked another 10 holes today and quick easy mounting wire hold downs to dress up the runs. First one not broke and still sharp...not as easy as first hole but still respectable and prob by 100 holes will get to my bit sharpener to prolong the life of the bit and not break by pushing too hard. Great value in my opinion for my needs!

Bought these for a job and I will be buying more! Cuts down on the time I spend drilling with other drill bits. Good quality. Stays sharp when using cutting oil but they will get ate up if you use them hard. Nice storage case and function as designed.

These work great. They seem to last well enough for a small drillbit. We're drilling 18g steel and as long as we're careful we can easily get 100+ holes per bit.

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.

Drill bits last longer than normal for metal drilling.

Pretty good bits I was drilling broken bolts and this worked well... The bit is strong enough to chip and not snap... Glad I bought a 3 pack as the bolts were hard as a coffin nail

Excellent bulk pack, great durability

Used these to drill through a Geissele gas block and cold hammer forged barrel to pin the gas block to the barrel. Worked perfectly. Still sharp afterwords. The pack should last me forever for intended purposes. Also order several other size bits like these, so all in all I'm happy. Other purposes will be drilling through 7075 aluminum and polymer. I'm sure they can handle either with ease. I use tap magic while drilling metals, so if you're a person that goes ham on your bits, I cannot speak for the durability.

Awesome bits! Got these to repair some exhaust manifold stud holes and they go through aluminum like butter.

Exelente producto ya lo he probado y no hay queja, llego en tiempo y forma. ¡BIEN POR USTEDES!

A bit of a wait, but worth it, and the price was good. Used one almost all day drilling holes in steel panels, works good, cuts nice and still as sharp as when I started.

Amazing. Only needed one for multiple holes through aluminum and it didn't even wear out.

I used the drill bits for 1/4" stainless steel, made 8 new holes and drilled out some smaller holes. Bits seemed to work well for the price.