Header banner
Revain logoHome Page
πŸ”© industrial drill bits: high-performance 8 inch cobalt aircraft extension drilling cutting tools logo

πŸ”© Industrial Drill Bits: High-Performance 8 Inch Cobalt Aircraft Extension Drilling Cutting Tools Review

3

Β·

Poor

Revainrating 2.5 out of 5Β Β 
RatingΒ 
2.3
πŸͺš Industrial Drill Bits, πŸ”ͺ Cutting Tools

View on AmazonView on Π―M

Media

(4)
img 1 attached to πŸ”© Industrial Drill Bits: High-Performance 8 Inch Cobalt Aircraft Extension Drilling Cutting Tools
img 2 attached to πŸ”© Industrial Drill Bits: High-Performance 8 Inch Cobalt Aircraft Extension Drilling Cutting Tools
img 3 attached to πŸ”© Industrial Drill Bits: High-Performance 8 Inch Cobalt Aircraft Extension Drilling Cutting Tools
img 4 attached to πŸ”© Industrial Drill Bits: High-Performance 8 Inch Cobalt Aircraft Extension Drilling Cutting Tools

Description of πŸ”© Industrial Drill Bits: High-Performance 8 Inch Cobalt Aircraft Extension Drilling Cutting Tools

βœ”οΈ COBALT DRILL BIT DIMENSION:3/8"(Diameter) x 3-5/8"( Flute Length) x 6"(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
    0
  • 3
    0
  • 2
    0
  • 1
    2

Type of review

Revainrating 1 out of 5

Do not buy!: Drill

Terrible product! I ordered 3 packs but after receiving them I found that the 3 bits were bent but as soon as I started using them they started breaking - just drill into wood! I will never buy again, this is junk!

Pros
  • Nice item
Cons
  • Out of fashion

Revainrating 5 out of 5

Haven't tried it with metal but it's great with wood.

It was great! I make and assemble cabinets. I use them in the shop and in the field. I have tape on some for pre-drilling for a specific drilling depth. The length is great for pre-drilling pocket holes to avoid splitting and many other uses.

Pros
  • inspires confidence
Cons
  • disappears

Revainrating 1 out of 5

Got used bits, some cobalt some not#?!@%?!

I received five 6 inch bits but as you can see in the picture they were all used. I found the picture when I opened the package. I could hardly believe it. Take a closer look, the one with the drywall is clearly not cobalt, just regular high-speed steel, easily distinguishable by its surface. I bought the same set of bits a few months later. back and got five new cobalt bits that I am completely satisfied with. Don't know what to do with this batch but I didn't order the various used bits so I…

Pros
  • Great price
Cons
  • Big and bulky