Lothee 60 Pcs Micro Drill Bits Set Tungsten Carbide PCB Jewelry,0.1-3.0 Mm

They're easy to break, but they do work with finesse! I bought these in an attempt to resize carburetor jets, and they worked wonders! The range in size is nice, and you get enough of all of them to break one and still be okay. Be careful with them, and they drill just fine.

Great bits but the smallest are extremely fragile. One of the three sets I received had the .1mm - .3mm snapped off in the unopened case because the bits weren't tightly bound by the cases built in bit holders. You'll want to inspect them closely when they arrive because the smallest bits are so tiny, it's difficult to even see them thru the case plastic

The only reason I didn't give it 5 stars is because, if you're like me, I skip over 5-star reviews. First off, the number of drills you get for the price is a great value. The sizes are actually noticeably different and color coded, though I didn't actually measure them. They come in a pack of three cases that stand upright for easy access. I personally use them to make hole for my 15mm cannon barrels on my tanks and they work beautifully. Little force to start and very sharp. You can even use some of the thinner drills to use om M.G.'s if you have magnified lenses and a steady hand. I would state that the thinner ones are very brittle, so a soft touch is extremely important when using them, but if you've ever used drill buts this thin, you should already know that. So, the only drawback for me is that the shanks are quite thick and takes a little bit umph to get them in my pin vice, but they are also long enough to use them by hand. Hope this helps.

If you do any watch-making or repairs, these are cheap and great for enlarging wristwatch hands holes when they arrive and the Cannon Pinion holes aren't quite the size the mfr said they were. If you don't do watches, you could maybe start a successful 'side-hustle' doing stuff like Canine & feline dentistry?

I received these micro drill bits in good condition. Each of the 3 sets came well protected in sturdy plastic storage cases. I struggled to get one open until I figured out the secret (LOL). They are true in size and appearance to the seller’s description. They are very small and delicate bits. They are best used in a Dremel type tool, not a larger drill motor. I bought these micro drill bits for drilling into printed circuit boards but I soon found other uses for them. They work well to deepen, widen, and/or smooth the factory string slots in guitar bone nuts, or Graph Tech nuts. The micro sizes are very close to the gauges of electric guitar strings. Used as a rotary file, they work better than welding torch tip cleaners that are sold as guitar nut slot files.

It's a real crap, deception I felt robbed, amazon should supervise more, I bought it to have a precision tool, they all broke, I'm very angry, ridiculous they should go to prison pure banditry, misleading advertising

Easy to use, the right sizes for what I need. The only thing I have is one of the very tiny ones was broken. Otherwise it is very good and stable.

I purchased this set for PCB prototyping and small-scale engraving projects, and I'm genuinely impressed with the performance. The range from 0.1 mm to 3.0 mm covers everything I need for intricate work on circuit boards, jewelry, and even some softer stones. The tungsten carbide construction is solid and feels very durable. Even after multiple uses, the bits stay sharp with minimal signs of wear. I've used them in a CNC router, and they cut cleanly without chipping or skipping, even on delicate materials. What I appreciate most is the consistency—each bit is clearly labeled and fits snugly in my collet without wobbling. The storage case is also a nice bonus for keeping everything organized and safe. If you're doing precision drilling, engraving, or micro-routing, this set is a fantastic value for the price. Highly recommended for makers, hobbyists, and anyone working with fine detail.

So far this set of drill bits is turning out to be exactly what I was hoping for, awesome value for the money, would definitely by them again!?

Not as pictured. But still I can make do I use these all the time

excelente simplemente excelente