115Pcs Cobalt Drill Bit Set M35 HSS Jobber Length

Drill bits are a bit more brittle than high quality ones. Solution, feed them a bit less … 20+ years of machining does help to know speeds and feeds for the circumstances. Would definitely buy again !

These are pretty good drills with minimal runout. They have worked well and cleanly in wood and steel so far. The case, however, is very cheap, thin, and bent already on delivery. I had to do some repair to make it usable. Still, the drills are pretty good quality for such a great price.

Great product.

short one bit...random lengths..there for case does not hold bits well when opening case. silver color not gold color as shown.

Product is a steal at 120$ given the hardness of the bits and the vast selection you get with the 115 or so bits that come with it. The case may arrive with a busted brass rivet or bent case like mine, but all the bits were still held in place with the Styrofoam which is more important for those small bits that are unlabeled. If the rivet is broken, it's pretty easy to just pop in a new one from aluminum or steel rivets I had on hand. The bent sheet metal case? It's thin stuff so it was easy to bend straight by hand. My biggest issue is that a few of the bits I used (#44 size specifically) didn't run true in the drill press. But runout wasn't so big of an issue as I just used a starter drill bit and then chased that with the #44 drill bit. Performance-wise though, hard to beat. The bits cut like butter through mild steel and they don't shatter easily like those cheaper titanium plated drill bits. In the end, worth every penny. Also, the 8 or 9 bits I measured with a micrometer were indeed true in size. Very pleased with my new set and worth the money 💰

Took a chance on these cobalt bits because of how many sizes it includes for the reasonable'ish price. The problem is that the quality is very shoddy. The round ends that spin in your chuck are annoying, but over half of the bits I've used so far chip and break instantly upon first use. I'm drilling annealed un-heat treated 1095 steel. My name brand cobalt bits go through like butter, but these... Some of the bits work fine so far, but it's been more miss than hit. I guess it's nice to have all the odd sizes that are included,and they'd probably work on soft materials, but these are made for drilling metal, and they ain't cutting it.

First thing I noticed was the side index trays don't lay down separately so you can see which bit you need, or you have to pull bits out of the index tray to see behind the one's in front. This is one thing I don't care for. I'm feeling not much thought went into the making of this case. I'm hoping as I use these drill bits my thoughts don't go down hill.

For what these cost they actually drill pretty decent. Haven’t broke any yet