5mm / 0.19" Cobalt Drill Bit Set (10 Pcs), M35 Cobalt Twist Drill Bits for Stainless Steel and Hard Metal

Tiny and sharp and for their size durable under pressure. The included case is quite nice and very useful. Glad that I found these and they have worked very well for my little projects.

Great product. Holds edge very well. Drill through stainless steel plates with no problem.

I'm impressed. I've only drilled about 30 holes through 1/8" steel plate, but the one bit I've used has cut amazingly well. I had to drill a couple of holes through material I had welded up, and the bit just dove right in - nice curls and no chirping. I would definitely buy these again. Oh, and the 5mm is perfect for tapping for 6mm screws.

Excellent purchase. Exactly what I needed.

I have only used one drill bit, so far, but it drilled 18 holes in 1/4" steel very well and was still working great at the end of the job.

Good enough! So far, I drilled over 50 holes in a steel bar with just one bit. Of course, I use cutting fluid, and set the speed right and let the drill do the work in an actual drill press. So far, that one bit is not even close to needing sharpening. If these are snapping on you, or getting dull, or are perceived to be dull out of the box, I'm betting you are the problem and not the drill bit.

Hard, sharp yet flexible enough to resist breaking when pressed. These bits drilled my watch lugs through for shoulder less fat pins.

So glad I finally found these as I've tried nearly all the other micro metal drill bits Amazon offers and these are the best. Totally worth the cost and so much less frustrating. The others dull quick and break even quicker. These will still break with pressure so be dainty but far better than others I used. The Best there is....so far.