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Product Specifications
| Part Number: | CO18 |
| Batteries Included?: | No |
Product Details
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Most Helpful Customer Reviews on Amazon.com (beta)
Amazon.com:
4.5 out of 5 stars (13 customer reviews)
8 of 8 people found the following review helpful
5.0 out of 5 stars
Very Impressed, Oct 12 2011
By D Anderton - Published on Amazon.com
Amazon Verified Purchase(What's this?)
This review is from: Bosch CO18 18-Piece Cobalt Twist Drill Bit Assortment in Plastic Case (Tools & Hardware)
I had a fine set of DeWalt drill bits that see light duty at home. They were adequate for wood and mediocre for plastic (with a tendency to grab and bind). However, I was recently working on an electronics project housed in a steel box with aluminum front and back panels. The DeWalt bits worked ok on the aluminum panels but would scarely scratch the paint on the steel shell. My usual practice is to drill a pilot hole with the smallest drill bit that won't likely break in the process. But, wow, I couldn't get even the smallest drill bit I dared use do more than make a modest dent in the steel shell. I purchased the Bosch drill index specifically for this project. The cobalt-alloy did the trick. I punched the holes through with nominal effort and was delighted that the drill didn't bind after penetrating the metal. These drill bits are fantastic!I was VERY impressed.
Five stars and two thumbs up!!!!
6 of 6 people found the following review helpful
5.0 out of 5 stars
very high quality, Sep 21 2008
By Nikwax - Published on Amazon.com
Amazon Verified Purchase(What's this?)
This review is from: Bosch CO18 18-Piece Cobalt Twist Drill Bit Assortment in Plastic Case (Tools & Hardware)
these are very high quality bits, they are sharp and they stay sharp. I notice they have a very steep angle to them which means that they attack the material rather rapidly.
5 of 5 people found the following review helpful
5.0 out of 5 stars
Cut through steel fast, Dec 7 2009
By Joseph H. Francis - Published on Amazon.com
Amazon Verified Purchase(What's this?)
This review is from: Bosch CO18 18-Piece Cobalt Twist Drill Bit Assortment in Plastic Case (Tools & Hardware)
These bits are fantastic. I used one 3/8 inch bit to cut 24 holes in 3/16 steel almost like it was wood -- very fast. No sign of dulling. Excellent bits, but one small one was missing.
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