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high-quality 9mm m35 cobalt drill bit for cutting hard metals - straight shank, extremely heat resistant, and 5% cobalt m35 grade hss-co logo

High-Quality 9Mm M35 Cobalt Drill Bit For Cutting Hard Metals - Straight Shank, Extremely Heat Resistant, And 5% Cobalt M35 Grade HSS-CO Review

5

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Very good

·

$$
Revainrating 4 out of 5  
Rating 
4.2
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Details

MaterialM35 Cobalt High Speed Steel
Finish TypeTitanium
Shank TypeStraight
Cutting Angle String135 Degrees
BrandLingGan

Description of High-Quality 9Mm M35 Cobalt Drill Bit For Cutting Hard Metals - Straight Shank, Extremely Heat Resistant, And 5% Cobalt M35 Grade HSS-CO

Cobalt Steel - Manufactured From M35 5% Cobalt Steel, With Molybdenum And Cobalt Added To Creates A Hardened Alloy, Measuring Rockwell Hardness Up To 65, For Much Faster Cutting And Extra Longer Life Span, With Up To 10 Times When Compared with an Average HSS Drill Bit. HSS Titanium Coating - Classic HSS Construction With Titanium Coating For Capability And Durability. The Cutting Edge Is Hardened And Honed For Sharpness. Flutes Form - 2 Flutes Form Helps Clear Chips And Debris Away From The Bit, Decreasing Friction And Heat For A Faster, Cooler Drilling Process, Chatter-Free Design With Staggered Cutting Teeth Ensure The Precise Countersinking And Hole Smooth Clean. Straight Shank And 135° Point Angle - Straight Shank For Standard Drill Chucks And Collet Chuck To Hold Firmly, Assuring Accurate Centering; Helical Flute For Swarf To Easily Get Out; Ideal For General Purpose Drilling Applications. For Metalworking - Particularly Successful In Cutting Through Hard Metals(Hardness Less Than Hrc38°) Such As Stainless Steel And Cast Iron, Although They Can Be Used For Softer Materials Like Copper And Aluminium, Too. Not For Hardened Steel And High Carbon Steel.

Reviews

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

Revainrating 4 out of 5

decent product good for me

this is a decent quality. Is slightly smaller than 9.4 mm closer to 9.35mm with digital caliper. Still works. That's my feedback!

Pros
  • Sin problemas Hasta Ahora
Cons
  • was warped and defective, threw it away. live and learn

Revainrating 4 out of 5

Drill bit works OK but be careful

While the drill bit appears to be very durable, it comes sharpened with a very shallow angle. This makes is a challenge to get started in steel and to get a clean hole and exit. I would prefer a steeper angle with a bit more "bite". Also, the price was a bit high for a single drill bit - prior purchase of a pair of similar bits was same price but for 2.

Pros
  • As advertised
Cons
  • May not be suitable for softer materials such as wood or plastic

Revainrating 5 out of 5

Excellent drill bit

I bought this bit specically to drill the precise size hole for installing M6 rivetnuts. It did the job that it was purchased for.

Pros
  • I haven't used them yet, but they look like they should be very acceptable.
Cons
  • May require a stronger drill to prevent breakage and damage to the bit

Revainrating 4 out of 5

Check your size!: my feedback

The ad says 5.2mm, the label on the package says 5.2mm. The drills are etched with 5.5mm.Fortunately I spotted this before drilling the holes for a 6x1.00mm tap.

Pros
  • For the price you can’t go wrong
Cons
  • Expensive compared to other drill bits on the market