Best Nordwolf Extra Long Drill Bits in 2026

Daisy
Last Updated: Feb 8, 2026

At a Glance: Our Top Picks for Nordwolf Extra Long Drill Bits

Drill America GLBCOX65/32 5/32" x 6" Cobalt Aircraft Extension Drill Bit, GLBCO Series
#TOP1
Drill America Glbcox65/32 5/32" X 6" Cobalt Aircraft
9.8
PM SCORE
Drill America 3/16" x 6" Cobalt Aircraft Extension Drill Bit, GLBCO Series
#TOP2
Drill America 3/16" X 6" Cobalt Aircraft Extension
9.8
PM SCORE
Drill America - GLBCOX121/4 1/4" x 12" Cobalt Aircraft Extension Drill Bit, GLBCO Series
#TOP3
Drill America - Glbcox121/4 1/4" X 12" Cobalt
9.8
PM SCORE

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Summary of the Best Nordwolf Extra Long Drill Bits of 2026

Drill America Glbcox65/32 5/32" X 6" Cobalt Aircraft Extension Drill Bit, Glbco Series

DRILL AMERICA
GLBCOX65/32
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Effective in drilling tough, high tensile strength materials like stainless steel, inconel and titanium

135° split point tip prevents drill from walking

Round shanks allow use with a wide variety of tool holding systems

Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools

6" overall length for drilling where extra length for reach is required

Drill America 3/16" X 6" Cobalt Aircraft Extension Drill Bit, Glbco Series

DRILL AMERICA
GLBCOX63/16
6.00 X 4.00 X 2.00 Inches
1.00 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Effective in drilling tough, high tensile strength materials like stainless steel, inconel and titanium

135° split point tip prevents drill from walking

Round shanks allow use with a wide variety of tool holding systems

Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools

6" overall length for drilling where extra length for reach is required

Drill America - Glbcox121/4 1/4" X 12" Cobalt Aircraft Extension Drill Bit, Glbco Series

DRILL AMERICA
GLBCOX121/4
6.00 X 4.00 X 2.00 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Effective in drilling tough, high tensile strength materials like stainless steel, inconel and titanium

135° split point tip prevents drill from walking

Round shanks allow use with a wide variety of tool holding systems

Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools

12" overall length for drilling where extra length for reach is required

#TOP4
Best For Air

Hss Cobalt Drill Bit Set 1/8 In. X 12 In. Aircraft Extension Extra Long Deep Hole Drilling-5Pcs

MAX-CRAFT
ACX0108-12-5P
12.00 X 1.00 X 1.00 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
MAX-CRAFT 8.56

Features

✔️【 COBALT DRILL BIT DIMENSION】:1/8"(Diameter) x 1-5/8"( Flute Length) x 12"(Overall Length)

✔️【 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.

✔️【 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.

✔️【 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".

✔️【 APPLICATION】: Best used for drilling deep hole in metal, high-carbon steel, aluminum and alloy steel, cast iron, stainless steel and titanium

Hss Cobalt Drill Bit Set 1/8 In. X 6 In. Aircraft Extension Extra Long Deep Hole Drilling-5Pcs

MAX-CRAFT
ACX0108-6-5P
6.00 X 1.00 X 1.00 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
MAX-CRAFT 8.51

Features

✔️【 COBALT DRILL BIT DIMENSION】:1/8"(Diameter) x 1-5/8"( Flute Length) x 6"(Overall Length)

✔️【 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.

✔️【 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.

✔️【 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".

✔️【 APPLICATION】: Best used for drilling deep hole in metal, high-carbon steel, aluminum and alloy steel, cast iron, stainless steel and titanium

Countersink Bit Set For Metal, M2 Cobalt Countersunk Bits 5 Pieces, Gold Oxide Countersink Drill Bit,1/4" Hex Shank Countersunk Bit Set For Drilling In Copper, Aluminum, Wood, Plastic

BOYOUYS
ZT006
4.50 X 1.00 X 5.50 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
BOYOUYS 7.32

Features

✅【Five-blade design】Each countersunk drill adopts five-blade blade design, which can reduce vibration and prolong life, achieve smoother drilling, with 1/4" metal hex.

✅【Compact Grinding】Precision grinding 82° tip for drilling holes on most medium hardness stainless steel, copper, aluminum, wood, plastic.

✅【M2 HSS Cobalt Layered Drill Bits】M2 Cobalt Coated, each metal countersunk drill bit is made of high quality M2 HSS material, this countersunk drill bit set is excellent in heat, corrosion and rust resistance to reduce friction and run cooler.

✅【Universal Compatibility】Surface black oxide treatment increases corrosion resistance, and the five-blade design helps create a strong connection between the screw and the material.

✅【Clear Sizes】Meticulously crafted drills with very high visibility numbers available in very common 1/4", 3/8", 1/2", 5/8" and 3/4" drill sizes.

✅【100 extra-long warranty period】:if you have any questions about the product, please contact us and we will answer you within 12 hours. If the hexagonal handle breaks, refund or replace for 100% .

Newshark Impact Hex Shank Drill Bit Set 13 Pcs (1/16"-1/4"), M35 Cobalt Drill Bit Set, Quick Change Impact Driver Drill Bit Set For Hardened Metal, Stainless Steel, Cast Iron, Wood And Plastic

NEWSHARK
YMX0037
6.50 X 5.00 X 0.30 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
NewShark 9.56

Features

✅【M35 TWIST HEX DRILL BITS SET】Made from M35 Cobalt Steel with Cobalt added to form a hardened alloy, can measure up to 67 Rockwell hardness, cut faster, last longer, and last longer than normal HSS drill bits 12 times.

✅【13PCS SET COMBINATION】13 most common sizes (1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4") to meet all needs, a drill holder with size index is included in the set for easy storage and organization.

✅【FULL GRINDING PROCESS AND 135° SPLIT POINT】Precise 135° SPLIT Point, Gold Oxide Surface and Round Straight Shank. Prevents walking and removes chips and particles faster. Precision fully ground to ensure smooth chip movement.

✅【QUICK CHANGE】1/4 inch hex shank is easier and safer to install in all power tools, especially for locking quick change chucks without slipping and falling off.

✅【MULTIPURPOSE】Small drill bits for wood, plastic, steel, aluminum alloy and stainless steel. Suitable for home DIY and general construction/engineering use.

M35 5% Cobalt Drill Bits Set 29Pcs (1/16"-1/2"), Straight Shank Jobber Drill Bits, Metal Hss Twist Drill Bits For Stainless Steel Hard Metal And Cast Iron

WILDBOSSY
YZZT-29PCS
7.50 X 4.60 X 2.30 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
qingshiyup 8.81

Features

✅【5% COBALT TWIST DRILL BITS SET】Made from M35 Cobalt Steel with Molybdenum and Cobalt added to form a hardened alloy, can measure up to 67 Rockwell hardness, cut faster, last longer, and last longer than normal HSS drill bits 12 times.

✅【29PCS SAE DIRLL BITS SET】The set includes 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 11/64, 3/16, 13/64, 7/32, 15/64, 1/4, 17/64, 9/32, 19/64, 5/16, 21/64, 11/32, 23/64, 3/8, 25/64, 13/32, 27/64, 7/16, 29/64, 15/32, 31/64 and 1/2 inch. Comes in metal indexed storage case for easy storage.

✅【TWIST DESIGN AND PERFORMANCE】Precise 135° SPLIT Point, Gold Oxide Surface and Round Straight Shank. Prevents walking and removes chips and particles faster. Precision fully ground to ensure smooth chip movement.

✅【PROFESSIONAL AND WIDELY USED】M35 Cobalt High Speed Steel is more suitable for hardening materials. Ideal for cutting stainless steel, steel and cast iron as well as wood, aluminum alloys and other metals. Not suitable for glass or ceramic materials. Pay attention to speed, pressure and heat control when drilling.

✅【SERVICE】If you have any problem with our metric drill bit set or are not satisfied with the product, please feel free to contact WildBossy.

Chicago Latrobe 520 Cobalt Steel Long Length Drill Bit, Gold Oxide Coated, Round Shank, 135 Degree Split Point, 1/2" Size (Pack Of 1)

CHICAGO LATROBE
44832
8.09 X 0.55 X 0.55 Inches
0.66 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Long length drill bit has an extended flute and overall length to drill deeper and reach farther than a jobber length drill bit

Cobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials

Gold oxide finish lubricates and provides wear resistance on ferrous materials

Self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging

Extra thick web provides increased strength and rigidity compared to standard drill bits

Made in the USA

Top 10 extra long drill bits Brands on Amazon

Here is the list of top-rated brands that were evaluated by PM.

Brand Count
Drill America 3
Max-Craft 2
Boyouys 1
Chicago Latrobe 1
Newshark 1
Wildbossy 1

Top 10 extra long drill bits Brands Pie Chart


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