Top 10 Cobalt Drill Bits for Hardened Steel – Jobber Drill Bits

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BOSCH CO14B 14-Piece Cobalt M42 Metal Drill Bit Assorted Set

BOSCH #ad - High-heat resistant bits – withstand high-temperature applications for extended periods of time. Enhanced m42 alloy material – contains 8% Cobalt alloy that delivers 10x life vs.

Standard bits. Surface-hardened tip – penetrates tough abrasive materials. Includes – 1/16", 3/8", 7/64", 9/64", 1/8", 5/32", 5/16", 3/32", 1/4", 3/16", 5/64", 7/32", 1/2". Thick web-helix design – provides additional stability in tough applications. Cobalt m42 drill bit – provides upgraded m42 cobalt jobber-length bits designed for durability, titanium, high heat resistance and Hardened surface for stainless steel, cast iron, light-gauge metal and aluminum.
BrandBOSCH #ad
ManufacturerBOSCH #ad
Part NumberCO14B
WarrantyProduct Defects Only



Twist Jobber Length Drill Bit Kit for Hardened Metal, with Indexed Storage Case 1/16"-3/8", Cast Iron, M35 High Speed Steel, Plastic and Wood, 135 Degree Tip, GMTOOLS 15Pcs Cobalt Drill Bit Set, Stainless Steel

GMTOOLS #ad - Professional drill bits: gold oxide finish and round straight shanks, fully ground spiral groove design with high grinding accuracy, steel and cast iron as well as wood, for cutting stainless steel, aluminum alloys and other metals.

Quality commitment: if for any reason you are not satisfied with your purchase, please contact us. High quailty material: manufactured from industry grade M35 High Speed Steel with 5% Cobalt added, usually giving better Heat, Wear and Chip Resistance and Long Tool Life. 100% satisfaction Guarantee for risk-free shopping! Making drilling precise, reducing friction and heat for a smooth chip movement.

Set includes: 15pcs jobber length drill bit set with plastic storage case, includes 1/16" 2pc, 7/64" 1pc, 1/8" 2pc, 7/32" 1pc, 1/4" 1pc, 5/16" 1pc, 3/16" 1pc, 9/64" 1pc, 5/32" 1pc, 5/64" 1pc, 3/32" 2pc, 3/8" 1pc.135° split point: the 135° fast cutting point is automatically centered and prevents walking, clears chips and particles faster. We provide 30-day money back.
BrandGMTOOLS #ad
ManufacturerGMTOOLS #ad
Part NumberGMTOOLS

3. Drill America


DWDCO Series, Drill America, 1/2" X 64ths, DWD29J-CO-PC 29 Piece M35 Cobalt Drill Bit Set in Round Case 1/16"

Drill America #ad - Gold oxide finish lubricates the drill bit and provides wear resistance. Cobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials. Self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging. Set of 29 jobber length drill bits includes inch sizes 1/16" to 1/2" in 1/64" increments. Meets anSI specifications.
BrandDrill America #ad
ManufacturerDrill America #ad
Weight2.2 Pounds
Part NumberDWD29J-CO-PC

4. Owl Tools


Plastic Storage Case Included, Cobalt Drill Bits for Metal and Steel, 13 Piece Set in SAE Sizes 1/16", 1/4" M35 Fully Grounded 5% Cobalt

Owl Tools #ad - Lifetime guarantee - here at owl tools usa based company we only care about your satisfaction. 135° split point design makes it Easier to Drill Repeated Holes in Harder Materials. Set of 13 cobalt drill bits - in the following imperial sizes 1/4", 5/64", 3/32", 5/32", 15/64", 3/16", 1/8", 7/32", 11/64", 13/64", 7/64", 9/64", 1/16".

We try our best to ensure each product is in perfect condition before you get it, but if something is not up to your satisfaction, please contact us for a full refund or replacement. Perfect for keeping Your Cobalt Drill Bits Neatly Organized and Safe.

Plastic storage case included - incredibly Tough and Durable Plastic Case. M35, fully ground, 135° split point - our drill bits contain 5% cobalt, are fully Grounded for a Precision Drilling Diameter. Cobalt drill bits are the perfect drill bits for metal - As well as other hard materials such as Stainless Steel, Bronze, Cast Iron, Hardened Steel, Titanium, and More!.
BrandOwl Tools #ad
ManufacturerOwl Tools #ad
Part NumberCobalt-Drill-Bits-13-Imperial



14-Piece DWA1240, DEWALT Cobalt Alloy Steel Drill Bit Set with Pilot Point

DEWALT #ad - Small bulk storage size fits inside the Small and Medium ToughCase+ sold separately - Ideal for organizing loose bits. Dewalt drill bit set comes with clear lid allowing you to easily see contents at glance. Clip latch for secure closing. Patented bit-bar design allows easy removal of drill bits and customizable placement. Connectable accessory storage system to optimize storage space of drill bits for wood, metal or i-beams.
BrandDEWALT #ad
ManufacturerDEWALT #ad
Height8.75 Inches
Length8.75 Inches
Weight0.8 Pounds
Width1.74 Inches
Part NumberDWA1240
WarrantyMissing Warranty Code



Cast Iron and Wood Plastic with Indexed Storage Case, Stainless Steel, COMOWARE Cobalt Drill Bit Set- 15Pcs M35 High Speed Steel Twist Jobber Length for Hardened Metal, 1/16"-3/8"

COMOWARE #ad - Prevent walking, clear chips and particles faster. Produced by precision fully ground which ensures chips move smoothly. High quality material: 5% cobalt high Speed Steel M35 provide extended tool life compared to ordinary drill bits.

Professional & widely use: m35 cobalt hss is more suitable for hardened material. 100% satisfaction guarantee: if you are not 100% satisfied with your purchase for any reason whatsoever simply please feel free to contact us. Durable and strong. Twist design & performance: precise 135°split point, gold oxide finish and round straight shanks. Size included: 15pcs jobber length drill bit set with plastic storage case including sizes:1/16" 2pc, 3/32" 2pc, 5/64" 1pc, 1/4" 1pc, 7/64" 1pc, 5/16" 1pc, 9/64" 1pc, 7/32" 1pc, 3/16" 1pc, 5/32" 1pc, 1/8" 2pc, 3/8" 1pc.

Particularly successful in cutting through hard metals such as stainless steel, cast iron, hard plastics and woods, high temperature alloy, titanium alloy, and also can be used for softer materials.
ManufacturerCOMOWARE #ad
Part NumberCNCobalt-15



With Metal Index Storage Box, Stainless Steel, MACXCOIP Cobalt Drill Bit Set, 115Pcs M35 High Speed Steel Bits for Hardened Metals, Cast Iron and Wooden Plastics

MACXCOIP #ad - Various sizes 115 sets of drill bits include 29pcs fractional size:1/16” to 1/2” in 1/64th increments; 26pcs Letter Size: A To Z; 60pcs Numbered Size: #1 To #60 Hss drill bit set hss cobalt drill bit set for hardened steel with excellent cutting performance.

Quick and efficient the cobalt drill bit set can be used effectively on most soft and hard objects, with a 135 degree point tip and twist design for faster cutting, self-centering to prevent walk-off and faster chip and particle removal. The inserts are hardened and polished for improved sharpness and precise cutting without wobbling. M35 cobalt drill bit the m35 cobalt drill bit is a durable, copper, sharp and robust drill bit suitable for cutting stainless steel, aluminum and other soft metals as well as plastics, iron castings, wood etc.

Easy storage the drill set includes drill holders with size indexes and is packaged in a small, strong package for easy storage and sorting. 115 sets of drill bits for long term use. If you have any questions, please feel free to contact us and we will be happy to help you.
ManufacturerMACXCOIP #ad
Height4.33 Inches
Length15.35 Inches
Width6.3 inches

8. amoolo


M35 HSS Metal Drill Bit Set for Hard Metal, Cast Iron Box of 10, Stainless Steel, amoolo 1/4" Cobalt Drill Bit10pcs

amoolo #ad - Fully ground process & 135° split pointfully ground spiral groove design clears particles quickly, decreases friction and heat for a faster and cooler drilling performance. M35 cobalt high speed steelindustry grade m35 high speed steel drill bit set, much harder than HSS used in other similar drill bits set.

90 days warrantyif you are not fully satisfied for any reason, please contact us for 100% refund or replacement. These drill bits contain 5% Cobalt, which increases wear-resistance and durability. Pay attention to speed, pressure and heat control during drilling. 135° split point with straight shank prevents walking and makes drilling precise and faster. 10pcs 1/4" cobalt drill bits10pcs - 1/4”dia 6.

35mm x 2-3/4”flute length 69. 85mm metal Drill Bits. This drill bit fits the majority of power drill currently on the market and come with a portable plastic case for easy storage and organization. No center punch is needed. Multiple applicationperfectly suitable for cutting through hard metal such as Stainless Steel, Aluminum Alloy, Steel, Sheet Metal and Cast Iron as well as Plastic, Wood and Other Softer Metals.
Brandamoolo #ad
Manufactureramoolo #ad



BOSCH CO21 21-Piece Cobalt Metal Drill Bit Set

BOSCH #ad - And larger. Included bit sizes: 1/16 in. 7/32 in. 1/8 in. 3/16 in. 9/64 in. 11/64 in. 5/16 in. 1/4 in. 13/64 in. 3/32 in. 7/64 in. 5/64 in. 5/32 in. 3/8 in. 15/64 in. 1/2 in. Bosch cobalt metal drill bits are solid, reliable, and provide 4X longer life than standard high-speed drill bits.

Performance: designed for very high drilling temperatures for superior performance in stainless steel. Also useful for general drilling in light-gauge metal, cast iron, and plastic. Accuracy: featuring a no-skate split-point tip for clean, precise holes and accurate starts.

Reliable: the three-flat shank design promotes better grip and guards against slipping on bits 3/16 in. Tough: the bosch co21 drill bit set is manufactured from cobalt for drilling in hard and abrasive materials such as stainless, wood, and high-density metal. Versatility: includes laser-etched marking to provide clearly marked bit diameter.
BrandBOSCH #ad
ManufacturerBosch #ad
Height1.5 Inches
Length4.6 Inches
Weight1.1 Pounds
Width9 Inches
Part NumberCO21



Metric M42 8% Cobalt Twist Drill Bits Set for Stainless Steel and Hard Metal 1mm-10mm/19pcs

STROTON #ad - Premium m42 8% cobalt steel, 68-70 hrc rockwell Hardness Scale, usually give the best heat, Wear and Chip Resistance and Long Tool Life.19pcs 135 degree split point drill bits includes :1mmlength:3.

4cm 1. 5mm 2mm 2. 5mm 3mm 3. 5mm 4mm 4. 5mm 5mmlength:8. 5cm 5. 5mm 6mmlength:9cm 6. 5mm 7mm 7. 5mm 8mmlength:11. 5cm 8. 5mm 9mm 9. 5mm 10mmlength:13cm DIA 05mm Increments. The sufficiently sharp bit edge can cut the metal Material into Long Strips of Iron Chips rather than Slowly Grinding Throng the Material with a Blunt Drill Bit. 3 steps design for cutting through Stainless Steel, Hard Metals, Aluminum, Plastic. This cobalt drill bit is typically capable of running three to five times Faster. Despite the higher price, the cost per hole when Using Cobalt Drill Bit Will be the Lowest, Since It Can Produce So Many More Holes.
BrandSTROTON #ad
ManufacturerSTROTON Ltd #ad
Part NumberM42 Cobalt-8(19pcs)