BOSCH CO2137 1-Piece 5/32 In. x 3-1/8 In. Cobalt Metal Drill Bit for Drilling Applications in Light-Gauge Metal, High-Carbon Steel, Aluminum and Ally Steel, Cast Iron, Stainless Steel, Titanium

Great quality and cheaper than buying at the store.

Fast shipping and delivery. Worked great for my needs.

It is very precise, cheap, and strong

It is a nice long and narrow chisel. It's quality seems good, pretty strong without bending.Materials wise it is as strong as some name brand ones. I recommend it.

I have a set of Bosch drill bit and impact bits.They seem to hold up much better than any other I have tried.I don't bother to sharpen them.After using them many many times, I just buy new ones.They cut really well and have a lot of use in them.I highly recommend and will buy more and more.

Bought this to be able to mount TV into metal studs. My original one stopped working due to being too dull. This was quick and easy. No issues at allMake sure you store it properly due to the sharp edges and size. Highly recommend!

The bolt that secures the drive shaft to my Ironman elliptical broke in the flywheel mount. The bolt was threaded on the shaft and would not unthread. Can't find a replacement shaft so the only option was to drill out the center of the broken bolt and use an extractor to remove it. I set my drill press to the slowest speed and used cutting oil. I bought a set of cobalt Milwaukee bits (Home Depot) that barely scratched the surface. Discovered that they weren't even sharp out of the box! Used a bit sharpener and cutting oil to make very slow progress, one bit step up at a time. Several of the Milwaukee bits broke off and had to be re-shaped and sharpened. The extractors would NOT budge the broken bolt. I even bought a $40 Dewalt cobalt bit from Lowes and realized that I was going to have the same issue. I decided to take the risk with ordering these from Amazon. These Bosch bits tore straight through the broken bolt (without the need to sharpen!). Never could get the extractor to move the broken bolt, but after enough of the center of the bolt was cored out, the small layer of threads remaining were knocked out with a punch. Elliptical is back in service with new bolts and fasteners. I also bought a 1/2" bit that I never used, but I'm saving that for my next emergency. These are good sharp bits.

I mean its a drill bit, I needed it for a hole that got jacked up by a roll pin so I used this to remove some burs rolled inside the hole and true things up. It dis the trick and it was cheap.

Great drill bits! I use these in my small engine repair shop! I keep coming back to buy these drill bits from Bosch as they are a great value!

Didn't use on anything hard yet but wood drilling like butter. Way better than cheaper brand I had. Very happy so far

Great drill did the job I needed it for

buena calidad

The claim is it can drill through hard steel . This is not what I discovered while attempting to drill out a broken bolt . The end of the bit dulled so quickly that I could not even penetrate the broken bolt .