29Pcs(1/16"-1/2") Cobalt Drill Bit Set M35 HSS Jobber Length

Absolutely love this drill bits. I broke an exhaust manifold bolt off in my f150 and these drilled it out with ease. Definitely worth the price

Wow, these worked really well on my sprinter’s sheet metal. May not cut through like hot butter but really good.

I love a good drill bit set. There is something deeply satisfying about opening a fresh case of organized bits—it makes me feel like I can build a deck, fix the car, or at least hang a picture frame without putting 14 unnecessary holes in the drywall. This set is almost perfect. The Good: The case is sturdy and holds the bits tighter than I hold onto the thermostat setting in the winter. The larger bits are absolute beasts; they chewed through wood and mild steel like it was butter. The "Eh, Needs Work": I knocked off a star because of the smaller gauge bits. I tried to drill a pilot hole into a stainless steel bracket, and the small bit just sort of spun around on the surface like a breakdancer. It didn't "bite" at all. It was less of a "drill" and more of a "friction heater." Summary: Durability: High (for the big ones). Value: Great for the price. Performance: 90% excellent. Just be warned: if you need to do fine detail work on hardened stainless steel, the little bits might give you the silent treatment. Still, a solid addition to the toolbox. I’d tell you a joke about a drill, but it’s boring.

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 💰

Very impressive on its functionality. I purchased before Milwaukee and Dwall drills and they did not performed correctly, as a matter of fact, they got broke and it took kind of long to perform the drilling. With this MACKCPIP cobal drill bit set, i drilled like 5 holes with out any issue. Except for the smaller drill bit got broke, but the other one i used worked more then great!!!

These left handed bits did exactly what I needed them to do. I snapped a grade 8 bolt replacing my HPOP in my 2003 Ford F-350 6.0. It was below flush with no other way to get out. Used an 18c auto punch to make a divot and this bit shredded right through the bolt, giving me the space needed for an extractor. I was stressing. The morning after I got the bits, the bolt was out in less than a half hour. Life saver!

Nothing special here, basic bits that failed to cut through the metal that I bought them for. Ill keep them for the price but worried I might lose them eventually because the case they come in is so flimsy, doesn't really snap closed at all, and just feels like it will fall apart if you use it too much.,

I use the MACXCOIP cobalt left hand drills to remove broken bolts, studs, and fasteners. They’re very hard so they are subject to breaking. Don’t use them too agressively or with a very high speed on metal. They seem to be good quality and very sharp. These are special purpose application only and should last.me for many years. The set came in a plastic index case to keep the jobber-length bits together and easy storage. Good value.

No era lo que esperaba muy caras y son de medida muy pequeñas, no llegan ni alos 10mm. Yo buscaba de 8mm. sta 14mm. Pero la descripción está muy confusa

For so long I went with just whatever came with the drill. These bits are so hard, and with a little bit of oil cuts super well and stays sharp. Left hand is extra handy to drill out broken/welded in screws. Love them. Would bring them to bed if I were allowed.

Works well

I purchased this particular set because I needed a #30 wire gauge drill bit for a project that used 1/8" rivets . The only other option for a SINGLE bit on Amazon was stuck in "neverland" and other sites wanted $30USD for a single bit which was not reasonable. So I found this set for a good price rather than buying them singly. I am significantly impressed with the quality and strength of these bits on 550 stainless and lubricant... Though my unsteady hand meant some failed starts and controlled rpms on my hand drill. (These are probably better on a drill press). Starting the hole was easy enough as was finishing through the mixed materials and the bit did not overheat or wear. I cant say about Cast Iron or Titanium though but your mileage may vary. These would go through pretty much anything else easily as long as you had the right lubrication and Pressure/RPM control. ALL small bits (and these are all smaller than 1/4 of an inch) will break easily so just be mindful of that and go slow and steady without overt amounts of force. The bits are all neatly organized in its index and a small pull tab brings them out as well. Each bit is labelled as is its index for easy use. My only complaint (and I took a star off for this) is that the front label is upside down with no indication or sticker as to which side goes up. Otherwise I had to open my bit box on its side so they didn't all spill out on my table (thanks to reading reviews). I think these are factory rejects because of the label as the bits work just fine and are probably more expensive if the label were to be placed correctly. Otherwise I'm happy with keeping this set for what I will use them for. Though "Wire guide number" bits will not be used too often for me, this set will be very useful in the future.

Bastante satisfecho con la duración, es similar a las brocas Milwaukee titanio pero a un precio menor para ser de cobalto esperaba que duraran un poco más pero aun así muy satisfecho