Cobalt M42 Drill Bits - Bosch Professional
Cobalt M42 Drill Bits - Bosch Professional
Cobalt M42 Drill Bits - Bosch Professional
Cobalt M42 Drill Bits - Bosch Professional
Last updated at 05/10/2026 20:21:45
CO14B 14-Piece Assorted Set with Included Case - Cobalt M42 Metal Drill Bits with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast
Delivery between 17–20 May $29
CO14B 14-Piece Assorted Set with Included Case - Cobalt M42 Metal Drill Bits with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast
Free delivery between 18–21 May
originally posted on lowes.com
Nice price on a set of M42 grade drill bits. My only complaint is that Lowes stuck one of their own ID tags over the instructions over the back of the set. These instructions included the maximum speed. This is good information to know. I could not remove the Lowes tag without destroying the paper the instructions were printed on.
originally posted on lowes.com
Bosch Quality. I have used several brands of drill bits, and find Bosch to be my favorite bbecause they keep their sharpness longer (Dewalt is my 2nd choice). I had several sizes that I wanted to buy, and buying the assortment proved a better option costwise
originally posted on lowes.com
Cut better that titanium drill bits. Went through 4 titanium drill bits trying to drill out hardnened bolts. Went and got these cobalt drill bits. And used one drill bit to cut through all the remaining bolts. Went right through.
| General | |
| Package Weight | 1.050 lbs. |
| Bit Type | Set |
| Bit Material | Cobalt |
| MFG Brand Name | Bosch |
CO14B 14-Piece Assorted Set with Included Case - Cobalt M42 Metal Drill Bits with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast
Delivery between 17–20 May $29
CO14B 14-Piece Assorted Set with Included Case - Cobalt M42 Metal Drill Bits with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast
Free delivery between 18–21 May
Nice price on a set of M42 grade drill bits. My only complaint is that Lowes stuck one of their own ID tags over the instructions over the back of the set. These instructions included the maximum speed. This is good information to know. I could not remove the Lowes tag without destroying the paper the instructions were printed on.
Bosch Quality. I have used several brands of drill bits, and find Bosch to be my favorite bbecause they keep their sharpness longer (Dewalt is my 2nd choice). I had several sizes that I wanted to buy, and buying the assortment proved a better option costwise
Cut better that titanium drill bits. Went through 4 titanium drill bits trying to drill out hardnened bolts. Went and got these cobalt drill bits. And used one drill bit to cut through all the remaining bolts. Went right through.
Quality drill bits, but they run hotter and drill slower than the titanium bits that I previously had. The advantage of these over the titanium bits is that they can be resharpened and the titanium bits cannot. Still, the titanium bits lasted for many, many years of occasional use, so I would have probably been happier with the titanium bits.
I had an external door double-cylinder deadbolt that froze up. To remove it for replacement, I had to drill out the outer cylinder and the connecting bolts that held the inner and outer cylinders together. The bits in this set cut right through the hardened steel (after all of my standard bits failed to do so). It was definitely the right bit set at the right time and a great price.
I bought and returned a set of dewalt cobalt drills that couldn't drill through much at all which surprised me since I bought the same set years ago from them and they held up well?? So I decided to get these a shot and wow! They cut through anything I have had to drill and I drill through heavy steel frames and thick metal. I would buy these again although I think they will last for years. Just remember to use wd-40 while drilling and they will last a long life.
Used for drilling through 3/8 thick bumper bracket steel. Stepped up in size up to 1/2". I did have to sharpen the 1/2" bit for hole 5 and 6, but the rest went through all 6 holes like butter with using low speed and oil. Nice case, but wish the sizes were labeled in the case.
I used these to drill into hard steel to mount a digital readout to a manual mill. My Titanium Nitride coated bits barely made a dent, but these cut through like it was aluminum. I have plenty of low-cost tools for general use, but these cobalt bits are a substantial upgrade and well worth it for tough applications.
An unbiased reviewing body tested these exact bits (with cobalt) and found them to be the strongest and most wear resistant consumer grade bits on the market. These went up against milwaukee, dewalt, craftsman, ryobi, black and decker, and several other name brands and off brands.Buy them now before the price goes up.
Great drill bits. Got them to drill a hole in stainless steel. Cut thru stainless with ease. They are now my go to drill bits for all steel work!
| General | |
| Package Weight | 1.050 lbs. |
| Bit Type | Set |
| Bit Material | Cobalt |
| MFG Brand Name | Bosch |
