Cobalt Drill Bit Set (1/16-1/4 Inch, 13PCS), M35 High Speed Steel Twist Drill Bits for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood

Good value, nice size, functionality, got these to replace the small ones that were broken in my old set.

Just said a drill bits were exactly what I was looking for, and they were extremely sharp and holding up very well so far

Needed a drill bit so I could install curtain rods on my metal pan roof. I am not sure what those posts are made out of but after reading reviews decided to go with the 13 piece Stroton Cobalt Drill Bit Set. I can't say the bit went through like butter but it did work for what I needed. I was able to drill four small (used 9/64) holes so the brackets could be mounted. I took others advice and set my drill on #18, used a little WD-40 and went really slow. I did not pre punch so the bit did try to move around a little. I would buy this brand again.

efficient . do the job

Works like it should. No problems.

Great little set for the price. They’re working good so far.

They wouldn’t drill my stainless exhaust on my motorcycle but I was using a Hand drill on a curved surface. Tried a small bit and then a larger one but they wouldn’t even scratch it. I tried center punching but my punch wouldn’t touch it. I gave up on drilling a hole. I was going to put a sheet metal screw through the bottom of the slip on muffler just to make sure it wouldn’t come off. It is a custom setup is why I needed to do that because the exhaust doesn’t fit the standard setup. I think they would work ok in a drill press on flat sheet stainless. They are made in China and had pretty decent reviews is why I bought them.

The drill bits seem to be good quality. I did snap one of the smaller bits which occasionally happens with any manufacturer’s bits. I followed the enclosed process for requesting a free replacement and promptly received an entire new set of 13 bits because they did not have the individual size bit that I broke. Highly recommend Stroton.