Drill America 1-1/8″ Cobalt Drill, RS 1/2″ Shank Review – Pros & Cons – Drill America

The Drill America 1-1/8″ Cobalt Drill, RS 1/2″ Shank is a true workhorse. This drill bit tackles tough materials. It’s like a seasoned mountaineer. It climbs through metal with ease. The cobalt construction adds significant strength. It also resists heat very well. Therefore, you get a longer tool life. This bit is quite durable. It’s perfect for demanding jobs. Furthermore, the 1/2″ reduced shank fits standard chucks. This makes it versatile for many drills. So, you can use it in your shop or on the job site. This Drill America 1-1/8″ Cobalt Drill, RS 1/2″ Shank really performs. It consistently delivers clean holes.

Moreover, this Drill America 1-1/8″ Cobalt Drill, RS 1/2″ Shank handles various metals. It cuts through stainless steel. It also drills cast iron. Aluminum and brass are no match. The bit stays sharp. This means less downtime for resharpening. Additionally, the unique geometry helps. It reduces friction. This keeps the bit cooler. Consequently, you get a smoother drilling experience. It’s like a hot knife through butter. You will notice the difference. This bit is a reliable choice. It’s built for serious users.

Finally, consider the value this bit offers. Its robust design is evident. The performance is consistently high. Although it’s a premium tool, it saves money. It lasts longer than many other bits. You won’t replace it often. Therefore, it’s a smart investment. It’s a tool that pays for itself. In conclusion, for precision and durability, this drill bit stands out. It’s a champion for heavy-duty work. This Drill America 1-1/8″ Cobalt Drill, RS 1/2″ Shank is highly recommended.

FEATURES:
– Brand: Drill America
– Diameter: 1-1/8 inch
– Shank Type: Reduced
– Shank Diameter: 1/2 inch
– Material: Cobalt
– Tool Type: Drill Bit
– Series: D/ACO
– Feature: High Performance
– Application: Drilling
– Design: Industrial Grade

This Drill America drill bit is 1-1/8 inches wide and made from strong cobalt material. It has a reduced shank that is 1/2 inch thick, meaning the part that fits into the drill is smaller than the drilling part. This high-performance tool is designed for industrial use and is great for general drilling tasks.

PROS:
– Great drill
– Went through stainless like butter
– Success drilling corten steel
– Did the job
– Worked as a cobalt bit should
– Cut fast
– Drilled through 1/4 plate steel quickly
– Quality seems good
– Cheaper than big brand names
– Like the reduced shank
– Lasted about 2 hours against hardened steel
– Would last longer against mild steel
– Would last longer with soft metals
– Drilled 18 holes in 1/4
– Last hole still drilled fine
– Diameter was right on
– Quality tool
– Legit
– Finished first hole in 20sec or less
– Did three other holes without issue

CONS:
– Doesn’t run true
– Lasted about 2 hours against hardened steel
– Cost was outrageous
– Point was destroyed
– Can’t testify to its long range durability

The Drill America 1-1/8″ Reduced Shank Cobalt Drill Bit with 1/2″ Shank, D/ACO Series, generally performs well for drilling tough metals like stainless and Corten steel, cutting quickly and accurately. Many users found it to be a good value compared to more expensive brands, and appreciated the reduced shank design. It can drill many holes in 1/4 inch steel and maintain its sharpness. However, its durability against hardened steel is limited, lasting only about two hours. Some users also experienced issues with the bit not running perfectly straight or the tip being damaged. Read more…











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Best Drill America 1 1 8 Cobalt Deals

Drill America - DWDCO1-1/8 1-1/8" Reduced Shank Cobalt Drill Bit with 1/2" Shank, DWDCO Series

Image of Drill America - DWDCO1-1/8 1-1/8" Reduced Shank Cobalt Drill Bit with 1/2" Shank, DWDCO Series

Key Features

  • ✅ Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys
  • ✅ Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools
  • ✅ Round shanks allow use with a wide variety of toolholding systems
  • ✅ When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
  • ✅ Manufactured to National Aerospace standard 907

Product Details

Brand:Drill America
Model:DWDCO1-1/8
Size:1-1/8"
Color:3-Flat
Dimensions:6 X 4 X 2 inches

Drill America - KFDRSD1-1/8 1-1/8" Reduced Shank High Speed Steel Black & Gold KFD Drill Bit with 1/2" Shank, KFD Series

Image of Drill America - KFDRSD1-1/8 1-1/8" Reduced Shank High Speed Steel Black & Gold KFD Drill Bit with 1/2" Shank, KFD Series

Key Features

  • ✅ High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance
  • ✅ Gold and black surface treated for use in stainless steel and other hard metal drilling
  • ✅ Round shanks allow use with a wide variety of toolholding systems
  • ✅ When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
  • ✅ Heavy duty 135 degree split point

Product Details

Brand:Drill America
Model:KFDRSD1-1/8
Size:1-1/8"
Color:3-Flat
Dimensions:6 X 4 X 2 inches

Drill America - DWDRSD1-1/8 1-1/8" Reduced Shank High Speed Steel Drill Bit with 1/2" Shank, DWDRSD Series

Image of Drill America - DWDRSD1-1/8 1-1/8" Reduced Shank High Speed Steel Drill Bit with 1/2" Shank, DWDRSD Series

Key Features

  • ✅ High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance
  • ✅ Black oxide treatment adds lubricity and creates small pockets on the surface of the tool that act to hold coolant near the cutting edge
  • ✅ Round shanks allow use with a wide variety of toolholding systems
  • ✅ When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
  • ✅ Ideal for drilling in low and medium tensile strength materials

Product Details

Brand:Drill America
Model:DWDRSD1-1/8
Size:1-1/8"
Color:3-Flat
Dimensions:8 X 2.9 X 1.1 inches

Drill America 1-1/8" Reduced Shank Cobalt Drill Bit with 1/2" Shank, D/ACO Series

Image of Drill America 1-1/8" Reduced Shank Cobalt Drill Bit with 1/2" Shank, D/ACO Series

Key Features

  • ✅ Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys
  • ✅ Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools
  • ✅ Round shanks allow use with a wide variety of toolholding systems
  • ✅ When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
  • ✅ Manufactured to National Aerospace standard 907

Product Details

Brand:Drill America
Model:D/ACO1-1/8
Size:1-1/8"
Color:3-Flat
Dimensions:9 X 1.6 X 0.8 Inches

1PC 1-3/8" S&D Silver Deming Cobalt Drill Bit

Image of 1PC 1-3/8" S&D Silver Deming Cobalt Drill Bit

Key Features

  • ✅ Bright finish: Classic M35 High Speed Steel construction with Bright Finish for proven capability and durability.
  • ✅ Strength & Hardness: Made with HSS M35 steel, Rock wall Hardness Level HRC 62-63.
  • ✅ Package & Size: 1pc, Diameter 1-3/8 inch, Total length 6 inch, Working length 3 inch.
  • ✅ Professional & DIY Use: For use on metal, wood & plastics. Not For Use On Concrete / Masonry / Stainless Steel. Perfect match for workshop or service vehicles.
  • ✅ 135 Tip & Twist Design: Increases cutting speed with self-centering and prevents walking, clears chips and particles faster.

Product Details

Brand:DRILLFORCE
Size:1 3/8 in
Color:Black And Gold
Dimensions:4 X 1 X 1 Inches

Drill America 1-1/8" Reduced Shank High Speed Steel Black & Gold Contractor Drill Bit with 3-Flat 1/2" Shank, KFD3F Series

Image of Drill America 1-1/8" Reduced Shank High Speed Steel Black & Gold Contractor Drill Bit with 3-Flat 1/2" Shank, KFD3F Series

$25.14 @ Amazon.com (Save 8%)

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Key Features

  • ✅ Contractor grade drill bit manufactured from M1 High Speed Steel.
  • ✅ For use in a wide range of materials in the iron and steel families such aluminum, iron, steel and other metal drilling.
  • ✅ 135 degree split point tip for self-centering and reducing thrust. Compared to a conventional 118 degree tip, these drills wont go "walking" on you.
  • ✅ 3-Flat 1/2" reduced shank creates an extra secure hold in your chuck.
  • ✅ Common flute and overall length for minimal adjustment during tool changes. 3" Flute Length, 6" Overall Length, 1/2" Shank

Product Details

Brand:Drill America
Model:KFD3F1-1/8
Size:1-1/8"
Dimensions:6 X 1.125 X 1.125 inches

Drill America 8 Piece m42 Cobalt Reduced Shank Drill Bit Set in Metal Case (9/16" - 1" x 16ths), D/ACO Series

Image of Drill America 8 Piece m42 Cobalt Reduced Shank Drill Bit Set in Metal Case (9/16" - 1" x 16ths), D/ACO Series

Key Features

  • ✅ Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys
  • ✅ Black oxide treatment adds lubricity and creates small pockets on the surface of the tool that act to hold coolant near the cutting edge
  • ✅ Round shanks allow use with a wide variety of toolholding systems
  • ✅ When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
  • ✅ 8 piece drill bit set comes in a metal case

Product Details

Brand:Drill America
Model:D/A1008-CO-SET
Size:Set
Dimensions:6 X 4 X 2 inches

Drill America 8 Piece m35 Cobalt Reduced Shank Drill Bit Set in Metal Case (9/16" - 1" x 16ths), DWDCO Series

Image of Drill America 8 Piece m35 Cobalt Reduced Shank Drill Bit Set in Metal Case (9/16" - 1" x 16ths), DWDCO Series

Key Features

  • ✅ 8 Piece Set with 1/2" Reduced Shank Drill Bits
  • ✅ Effective in drilling tough, high tensile strength materials like stainless steel, Inconel, and titanium
  • ✅ Reduced Shank Drills expand the size range capacity of a portable drill chuck. Common flute and overall length for minimal adjustment during tool changes
  • ✅ 135 degree split point tip for self-centering and reducing thrust
  • ✅ Manufactured to Aerospace Standard 907 and display high red hardness, permitting speeds up to 30% greater than with conventional M2 high speed steel

Product Details

Brand:Drill America
Model:DWD1008-CO-SET
Size:Set
Color:Gold
Dimensions:6 X 4 X 2 inches

Drill America - DWDCO1P12 #1 Cobalt Drill Bit (Pack of 12), DWDCO Series

Image of Drill America - DWDCO1P12 #1 Cobalt Drill Bit (Pack of 12), DWDCO Series

Key Features

  • ✅ Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys
  • ✅ Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools
  • ✅ Round shanks allow use with a wide variety of toolholding systems
  • ✅ When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
  • ✅ Ideal for drilling in tough, high tensile strength materials

Product Details

Brand:Drill America
Model:DWDCO1P12
Size:#1
Dimensions:6 X 4 X 2 inches

Narwhal 1 Inch Cobalt Drill Bits - 1 Pack - 6 Inch Length - M35 Cobalt Drill Bits with Storage Case - Perfect for Metal, Stainless Steel, Cast Iron, and More!

Image of Narwhal 1 Inch Cobalt Drill Bits - 1 Pack - 6 Inch Length - M35 Cobalt Drill Bits with Storage Case - Perfect for Metal, Stainless Steel, Cast Iron, and More!

Key Features

  • ✅ 1 PACK OF 1 Inch COBALT DRILL BITS - 1" Diameter with a Flute Length of 3" and Total length of 6"
  • ✅ M35, FULLY GROUND, 135° SPLIT POINT - Our Drill Bits Contain 5% Cobalt, Are Fully Grounded for a Precision Drilling Diameter. 135° Split Point Design Makes it Easier to Drill Repeated Holes in Harder Materials.
  • ✅ PLASTIC STORAGE CASE INCLUDED - Incredibly Tough and Durable Plastic Case. Perfect for Keeping Your Cobalt Drill Bits Neatly Organized and Safe.
  • ✅ COBALT DRILL BITS ARE THE PERFECT DRILL BITS FOR METAL - As well as other hard materials such as Stainless Steel, Hardened Steel, Cast Iron, Bronze, Titanium, and More!
  • ✅ NARWHAL GUARANTEE - We strive to source high quality products and if you're ever unsatisfied please reach out to us, our USA Based Customer Service is here to help!

Product Details

Brand:Narwhal
Size:1 Inch
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