Cobalt Drill Set for Metal by TTP HARD drills | 29 Piece Drill bit Set 1/16” - 1/2” x 1/64” | Added Cobalt for Drilling Harder Metals |Easy to use & Long Life | Easily Drill Chrome, Stainless Steel

These bits are great for drilling through metal. They cut so fast I have to hold them back to control the heat. I am very pleased with them. The case is also pretty good quality.These bits are expensive but I expect them to last a very long time, and apparently it is possible to re-sharpen them.

These are pretty ok bits. I haven't tried to drill through titanium or stainless - but they seem no worse than medium-high quality bits you'd get from an industrial supplier.They are not utterly unbreakable - of course. And they will bend before they break.Are they worth the price? Depends. The fact you can get sets of these bits of the same size in quantities of 10 or so, suggests that the manufacturer knows you will go through them. It's not a set of bits that will last forever, but then perhaps nothing is.

quality looks good….bought these because i am tired of lousy drills……..i just broke several. i hope these hold up to their reputation.

Fast delivery and awesome product

I bench drilled through 3/8 thick mild steel, I stepped up the drill bits and used the ttp cutting oil and 3 out of the 7 drill bits I used failed and dulled during the first use. Scoring can be seen on the cutters and flutes of the drill bits. This could be a fluke I expected more for the price. I gave it 3 stars because the ones that have not failed have performed excellent leading me to believe I received faulty bits.

Worth every penny. These drills are the last ones I'll ever buy

¯_¯_¯_¯_.Excellent...HIGHLY RECOMMENDED...Thank You.¯_¯_¯_¯_

THESE ARE THE ULTIMATE DRILL FOR ANY METAL. IF YOUR LOOKING FOR AN OUTSTANDING REALLY GOOD DRILL BIT FOR HARD METALS THIS IS IT. I TRIED DRILL THROUGH 3" SOLID STEEL WITH A COBALT BIT AND THERE WAS NO COMPARISON. THE COBALT REALLY COULD NOT DO IT BUT THESE DID & DID IT WITH A HAND HELD 1/2" DRILL.THESE DO THE JOB - YOU WONT BE DISAPPOINTED = EXCELLENT! I RECOMMENDED THEM TO MY LOCAL ENGINE REBUILD MACHINE SHOP.