Bosch CO21B 21 Pc. Cobalt M42 Drill Bit Set

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5,709Total Reviews

Jobber Drill Bits

n/a

Company Review Grade:

Bosch

3,239 Total Products

Bosch CO21B 21 Pc. Cobalt M42 Drill Bit Set

Analyzed on

Sold by Bosch

B

Fakespot review grade

B

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Pros & Cons

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The AI used to provide these results are constantly improving. These results might change.

Pros

Amazon offers much more competitive pricing than big box retailers. These bits perform flawlessly and hold up like a champ. The bits themselves have proven to be tough.

Cons

Awful product. Literally zero durability. Media could not be loaded after 1 year use. Bit case is worthless.

Tried drilling a hole in a pilot bearing shell maybe 1 mm thick, would not touch it. Was trying to drill through a pice of thin steel. Can't even drill soft metal. Metal is very brittle and susceptible to shear.

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Highlights

The AI used to provide these results are constantly improving. These results might change.

Quality

Very good performance in multiple materials with cordless, drill press and mill.

Should last longer than most other bits, seems well made

Drilled out many aviation, structural screws before weakening.

Bought this to drill out broken bolts on trailer redeck jod, my titanium bits would not even start to drill broken off bolts, t... Read More

Price

These are fantastic bits for the price.

A very nice buy and a great price.

I just sharp it up when it's start to dull, since price is inexpensive.

Shipping

Came shot but lost the edge very quickly.

Packaging/appearance

I had to pull a small red pin (see photo) and the box opened with one hand (see video).

The new set just arrived and thankfully, it was not encased in an outer edge welded plastic clam shell case that i hate because... Read More

Competitiveness

It met expectations, good price compared to other brands, it does its job.

Projectfarm on youtube did a comparison and i liked it best.

I buy these nowadays compared to the cheaper box store bits.

Amazon offers much more competitive pricing than big box retailers and support is top notch.

Overview

How are reviewers describing this item?
through, stainless, good, set and great.

Our engine has profiled the reviewer patterns and has determined that there is minimal deception involved.

Our engine has detected that Amazon has altered, modified or removed reviews from this listing. We approximate total reviews altered up to 324.

Our engine has discovered that over 80% high quality reviews are present.

This product had a total of 5,709 reviews as of our last analysis date on Jul 21 2024.