M35 5% Cobalt Metric Drill Bits Set (1mm-10mm/19pcs), Straight Shank Jobber Drill Bits, Metal HSS Twist Drill Bits for Stainless Steel Hard Metal and Cast Iron

solid drill bits.

Decent quality

I've used the bit for some plastic and aluminum projects and they seem good. However, the plastic flip case broke on the third or forth time opening/closing it and it felt quite flimsy right off the bat. Buy this for the bits, not the storage and you should be ok.

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.

Nice and sharp. Each bit slot is labeled for size.

very nice product

A lot of 3d printing files call for metric-sized holes, so I bought some metric-sized bits. They work great. Haven't really tried them on wood or metal, but plastic is isn't much of a challenge for any bit. Nothing bad to say though, and the drill index / box is pretty nice.

Ad has will drill Rockwell hardness 67. I was trying to drill the handle end of a knife and it did not work. The highest hardness of the knife steel can be in this case was Rockwell hardness of 62. That means the drill bit should have worked. But it did not. The good news is the tip of the drill bit only got dull, and it did not break. However, the drill bit set it is a good value for the price. Note I could not effectively centerpunch the steel. If you can't center punch the steel that could be a good indication you cannot drill it with this set.

Fonctionnent tel que décrit, c'est ce qui me manquait, du métrique, je fais de l'impression 3D et je ne fonctionne pas en mesure impériale

I made my mounting rack for my solar panels out of used steal pipe, and I had to drill quite a few holes for mounting these panels. The piping was quite hard and I bought five drill bits, so as to make sure I wouldn't run out. To my surprise the drill bits held up really well and I was able to drill all the holes with just one bit. I did pre-drill the holes with a center drill, but that was all I used, and of course some lubricant. I never thought that I could drill these many holes without wearing out the drill bit. Quite amazing.

Wanted,to have these bits, last longer

Buen producto.

Pense que iba a traer el estuche que tiene en la foto pero lo importante son la brocas y si cumplen con mis necesidades