Cobalt Drill Bit Set 6mm - 10pcs, M35 Twist Drill Bits Straight Shank, 6mm High Speed Steel Drill Bits for Drilling in Hard Metal, Stainless Steel, Cast Iron

I went through 3 other bits to drill 5 holes in a steel utility trailer. Then ordered these drill bits. I drilled over 30 holes in same steel trailer frame using one ONE of these drill bits! Still remained sharp. Remember to use alittle oil when drilling. Seriously, these drill bits are great!!

Nice set of bits. Sturdy container too.

Box is sturdy and packaging material was well protective of the product. Downside is there are 4 bits missing from the box, pictured. Sizes 1 to 2.5 are not there. I've tried shaking the box a bit but doesn't seem they're lost in there, either.Unfortunate, but the rest of the bits look great.

I've only used a few of the small ones so far, but they have been great. Nice and sharp, and I haven't broken any yet.

This set is a great value for your money . The storage case is very functional and markings are easy to read. The 5% cobalt content makes them very durable and are very sharp. I have drill metals and plastics so great drill ability. Great buy if you are into 3D2A projects.

These drill bits drilled out the bolt with no problem at all. This was a great value.

Great Product

Drill bits are good but the carry case is crap. I would have returned this but I needed to complete my project so I am dealing with the flimsy busted carry case.