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πŸ”§ efficient 8-inch cobalt aircraft extention drilling cutting tools: ultimate precision and performance logo

πŸ”§ Efficient 8-Inch Cobalt Aircraft Extention Drilling Cutting Tools: Ultimate Precision and Performance Review

3

Β·

Very good

Revainrating 4 out of 5Β Β 
RatingΒ 
4.0
πŸͺš Industrial Drill Bits, πŸ”ͺ Cutting Tools

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Description of πŸ”§ Efficient 8-Inch Cobalt Aircraft Extention Drilling Cutting Tools: Ultimate Precision and Performance

βœ”οΈ COBALT DRILL BIT DIMENSION:1/8"(Diameter) x 1-5/8"( Flute Length) x 12"(Overall Length). βœ”οΈ COBALT MATERIAL: HSS(M35) Cobalt Steel is the premium material with high hardness and red hardness to enable long drilling life and fast drilling performance. βœ”οΈ SURFACE TREATMENT: The Gold Oxide Ember finished surface treatment strongthen the hardness of drill bit body to ensure the long drilling life and better drilling performance. βœ”οΈ SPLIT POINT ANGLE 135 DEG.: No center punch is needed- the aggrevsive 135 deg. Split Point quick-cutting points are self- centering and penetrate quickly with less pressure. will not "walk" or"wander". βœ”οΈ APPLICATION: Best used for drilling deep hole in metal, high-carbon steel, aluminum and alloy steel, cast iron, stainless steel and titanium.

Reviews

Global ratings 3
  • 5
    1
  • 4
    1
  • 3
    1
  • 2
    0
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Type of review

Revainrating 4 out of 5

Good Bits Aren't Great But They're Good

Good Bits Aren't Great But They're Good. For the price I've bought it again. Drilling into Greenhart wood is no joke. The bits last a few hundred holes, go through another hundred or so.

Pros
  • Power Tool Parts and Accessories
Cons
  • Some Little Things

Revainrating 3 out of 5

Disappointing Best in Electric Drill Parts & Accessories

I keep those that are NOT broken just for length. They "might" come in handy for lighting projects that take a long time. They did a very poor job drilling metal as advertised. I will not buy again.

Pros
  • Drill Bit
Cons
  • Slightly Torn

Revainrating 5 out of 5

AMAZING DRILLS!

I don't usually write reviews but these drills deserve 5 STARS***** I had to go through steel lenses, two to be exact. I had a brick, a steel lens, a brick, and another steel lens. I alternated between these bits and the masonry bits and went through the steel. Work slow and let the beat do its job! I started with a smaller size and gradually increased it! Never force a racquet or run at high speed!

Pros
  • Jobber Drill
Cons
  • Write Later