Metric M42 8% Cobalt Twist Drill Bits Set for Stainless Steel and Hard Metal (1mm-10mm/19pcs)

Didn't cut hardened steel quite as good as full cobalt bits, but way-way better than regular titanium coated bits. For the price and a full set, these performed very well as expected. The stepped cutting edge is a nice feature, and the cutting face was barely scratched going through a M10-30 oxide 10.9 bolt. Will be nice to have for future tough situations.

I don't normally stop to review products unless it's something I use quite a bit and have tried other brands of the same type of product. Well I've burned, dulled, busted, even horribly abused all sorts of drill bits. They all seem to be about equal pretty much across the board. Some maybe a little bit better in performance. Nothing that really stood out to brag about. Ok I picked up this inexpensive set (I was going say cheap set because the price is very reasonable for what you actually get). These fricken drill bits are absolutely worth every single cent I spent on them. So worth it that I'm out here looking for a large set that has both metric and standard in the M42 8% cobalt grade these are. If you peck drill with this set I don't doubt they will last a good long time. And the warranty is incredible. Lifetime replacement. No one can beat that. I'll have to say tho, I haven't had to contact them yet for getting any replaced if needed. Let's just hope that would be a smooth process as well. I'm hoping. But I gotta tell you, I'm pretty busy at the moment, but stopped just to write this because I'm actually out here looking for a larger set from Stroton as where these came from. They are everything the boast in advertising and then some. Goes thru steel like it's no big deal. But remember to peck drill so you don't over heat the bit. That goes for any drill bit out there. But if and when you get these and try them, you will not be disappointed. At least I'm not. But then again I am 57 years young. So I have a little bit of experience on how to actually use a drill bit properly. If you don't have much knowledge about drilling, remember one thing, peck drill. If you don't know what that means, look it up. You will get way better results and your bits will last twice as long if not more. I know one thing, I'll get more than twice the expected life out of these due to the fact that they perform incredibly well. Like they stand out better than the average norm. They got me as a loyal customer. I really like'm. You'd have to tear them out of my dead hands to gett'm from me. So don't even try. Buy your own. They're right here, where you're reading this review. Good luck, have fun and happy drilling. Now a message to the seller of these bits.... where are the large sets of these bits. I don't see any. If you have one send me. Link. If not, than you'd better get one quick before I begin testing other sellers that have larger sets. Thanks for the bit. Good sht for real...!!!

Really great bits for the money, would buy again. High quality material. Case could be better than cheap plastic. Easy to use although specific directions and techniques would be helpful for the material that are made of and the types of metal to cut, having a guide explaining speed, pressure and lubricant based on the type of material the bits are made of would be very helpful

Overall, I am very happy with my purchase of the Metric M42 8% Cobalt Twist Drill Bits Set. It’s a solid product that performs exceptionally well on hard metals like stainless steel. The 8% cobalt alloy and 135° split point tip make a noticeable difference, allowing for much cleaner and faster drilling than with standard bits. The included metal case is also a nice touch and keeps the bits well-organized. While it’s a great product, there are a few things that could be improved. The size markings on the bits are a bit small, which made it hard to quickly identify the right size without a closer look. Additionally, the case's latch feels a little bit flimsy, so I have to be careful when carrying it around to make sure it doesn't pop open. These are minor annoyances, but they prevent it from being a perfect 5-star product. Despite these minor issues, I would still recommend this set. It's an excellent choice for anyone who works with hard metals, and its core functionality is top-notch. With a few small design tweaks to the case and markings, it could easily be a 5-star item.

Las compré para inoxidables y se soporta las cargas como todo con el uso prolongado van perdiendo filo pero dura bastante para su precio

Punte di ottima qualità, solo una a distanza di tempo si è spezzata. Ho scritto al venditore, il quale ha provveduto tempestivamente a inviarmi il ricambio. Venditore serio e professionale.

Gostei As brocas são muito boas

Very good quality

Strong drill bits and last for a long time