10 Best Jobber Drill Bits Cobalt
#1 Best Pick
2Pcs Cobalt Drill Bits, M35 HSS Metal Jobber Length Twist Drill Bit Set, Suitable for Drilling in Hard Metal, Stainless Steel, Cast Iron (6.5mm)
Brand: Janzoom
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- ăM35 COBALT HIGH SPEED STEELăDrill bits made from Industry grade M35 high speed steel,much harder than HSS used in other similar drill bits. They contain 5% Cobalt, which increases wear-resistance, durability and extra longer life span.
- ăAccuracyă135° split point geometry ensures accurate start and reduces walking on the working surface. Full-ground body drill faster with fewer defects than common rolled drill bits. excellent chip removal and heat removal.
- ăPROFESSIONAL & WIDELY USEăOur drill bits perfectly cutting through Hard Metal such as Stainless Steel, Steel, Sheet Metal and Cast Iron as well as Plastic, Aluminum Alloy, Wood and Other Softer Metals.Not for Glass or Ceramic Materials.
- ăFULLY GROUND PROCESSăFully ground spiral groove design clears particles quickly, decreases friction and heat for a faster and cooler drilling performance.
- ăEASY USE & STORAGEăIt includes 2pcs 6.5mm Cobalt 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 DIY, household maintenance and repair.
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#2 Best Value
Metric 16Pcs M35 Cobalt Drill Bit Set, 6mm HSS Cobalt Jobber Drill Bits, for Hardened Metals, Stainless Steel, Cast Iron and Wooden Plastics
Brand: MACXCOIP
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- M35 Cobalt Drill Bit: The M35 cobalt drill bit is a durable, sharp and robust drill bit suitable for cutting stainless steel, iron castings, copper, aluminum and other soft metals as well as plastics, wood etc. Note that it is not applicable to quenched bolts
- Single Size: The drill bits include 16pcs 6mm drills. If you have specific drilling size requirements, then the drill bit is very suitable for you
- 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
- HSS Drill Bit Set: HSS cobalt drill bit set for hardened steel with excellent cutting performance. The inserts are hardened and polished for improved sharpness and precise cutting without wobbling
- Easy to store: The drill bit kit is packaged in a small and sturdy package for easy storage and sorting. If you have any questions, please refer to us and we will be happy to assist you
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#3 Budget Pick
Sutton tools SM2 Heavy Duty Cobalt Jobber Drill Bit 19 Pieces Set, Gold, D109SM2
Brand: Sutton Tools
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- 135 Degree split point enables accurate positioning and less drilling pressure
- Thick core for increased rigidity in hard materials
- Precision engineered parallel shank for accurate hole size
- Made from high speed steel material
- Cobalt formula improves abrasive and heat resistance, for increased strength at higher cutting temperatures
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#4 Top Choice
2Pcs Cobalt Drill Bits, M35 HSS Metal Jobber Length Twist Drill Bit Set, Suitable for Drilling in Hard Metal, Stainless Steel, Cast Iron (3.2mm)
Brand: Janzoom
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- ăM35 COBALT HIGH SPEED STEELăDrill bits made from Industry grade M35 high speed steel,much harder than HSS used in other similar drill bits. They contain 5% Cobalt, which increases wear-resistance, durability and extra longer life span.
- ăAccuracyă135° split point geometry ensures accurate start and reduces walking on the working surface. Full-ground body drill faster with fewer defects than common rolled drill bits. excellent chip removal and heat removal.
- ăPROFESSIONAL & WIDELY USEăOur drill bits perfectly cutting through Hard Metal such as Stainless Steel, Steel, Sheet Metal and Cast Iron as well as Plastic, Aluminum Alloy, Wood and Other Softer Metals.Not for Glass or Ceramic Materials.
- ăFULLY GROUND PROCESSăFully ground spiral groove design clears particles quickly, decreases friction and heat for a faster and cooler drilling performance.
- ăEASY USE & STORAGEăIt includes 2pcs 3.2mm Cobalt 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 DIY, household maintenance and repair.
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#5 Popular Choice
MACXCOIP Metric 16Pcs M35 Cobalt Drill Bit Set, 5mm HSS Cobalt Jobber Drill Bits, for Hardened Metals, Stainless Steel, Cast Iron and Wooden Plastics
Brand: MACXCOIP
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- M35 Cobalt Drill Bit: The M35 cobalt drill bit is a durable, sharp and robust drill bit suitable for cutting stainless steel, iron castings, copper, aluminum and other soft metals as well as plastics, wood etc. Note that it is not applicable to quenched bolts
- Single Size: The drill bits include 16pcs 5mm drills. If you have specific drilling size requirements, then the drill bit is very suitable for you
- 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
- HSS Drill Bit Set: HSS cobalt drill bit set for hardened steel with excellent cutting performance. The inserts are hardened and polished for improved sharpness and precise cutting without wobbling
- Easy to store: The drill bit kit is packaged in a small and sturdy package for easy storage and sorting. If you have any questions, please refer to us and we will be happy to assist you
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#6 Top Pick
BOSCH CO21B 21-Piece Assorted Set with Included Case Cobalt M42 Metal Drill Bit with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, Light-Gauge Metal, Aluminum
Brand: Bosch
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- Cobalt M42 drill bit â provides upgraded M42 Cobalt jobber-length bits designed for durability, high heat resistance and Hardened surface for stainless steel, cast iron, titanium, light-gauge metal and aluminum
- Enhanced M42 alloy material â contains 8% Cobalt alloy that delivers 10x life vs. Standard bits
- High-heat resistant bits â withstand high-temperature applications for extended periods of time
- Thick web-helix design â provides additional stability in tough applications.Case Type:Plastic
- Surface-hardened tip â penetrates tough abrasive materials
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#7 Top Pick
Hymnorq 8.5mm Metric Twist Drill Bit Set of 5pcs - Jobber Length, Fully Ground and Straight Shank - M35 Grade HSS-CO, 5% Cobalt Added, Extremely Heat Resistant - Ideal for Drilling Stainless Steel
Brand: Hymnorq
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- COBALT STEEL - Manufactured from M35 grade cobalt steel, with molybdenum and cobalt added to creates a hardened alloy, measuring Rockwell hardness up to 67, for much faster cutting and extra longer life span, with up to twelve times when compared with an average HSS drill bit.
- FOR STAINLESS STEEL - Particularly successful in cutting through hard metals such as stainless steel and cast iron, although they can be used for softer materials, too. Not for heat treated steel / hardened steel / high carbon steel. Try to adjust the RPM when it fails to penetrate according to our suggested RPM chart.
- SELF-CENTERING - SELF-CENTERING - The 135° quick-cut split points can penetrate metals quickly with less pressure without "walking" or "wandering". No center punch is needed.
- 5PC SET - The set includes 10pcs of 8.5 mm diameter M35 grade cobalt steel twist drill bits, packed in a convenient plastic case for easy taking to worksites.
- SATISFACTION GUARANTEED - Here at Migiwata, we do care about your satisfaction. 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.
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#8 Top Pick
DEWALT DWA1240 Pilot Point Industrial Cobalt Drill Bit Set (14 Piece)
Brand: DEWALT
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- Designed for maximum speed and life
- Pilot point and split tip design
- No bit walking - more user control
- Intended to be used on hard metals
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#9 Top Pick
Hymnorq 1/4 Inch Fractional Size M35 Cobalt Steel Twist Drill Bit Set of 10pcs - Jobber Length and Straight Shank - Extremely Heat Resistant - Perfect for Drilling in Stainless Steel and Iron
Brand: Hymnorq
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- Industrial-Grade M35 Cobalt Steel: Made with 5% cobalt-enriched M35 steel, these 1/4" drill bits deliver superior strength, heat resistance, and wear durabilityâideal for drilling stainless steel, cast iron, and other tough metals.
- Dual Twist Flute & Fully Ground Design: Features a fully ground, dual twist flute for smoother drilling, faster chip removal, and greater precisionâreducing friction and extending tool life during heavy-duty use.
- 135° Split Point for Precision Starts: The 135° split point tip ensures accurate starts with minimal walking, making it easier to drill clean, precise holes on hard or curved surfaces..
- Straight Shank with Chamfered End: Designed with a straight shank for a secure fit in standard drill chucks and a chamfered end for smooth bit changes and better grip stability during operation.
- Durable Transparent PP Case: Comes in a tough, transparent plastic case that keeps all 10 drill bits organized, protected, and easily visibleâperfect for professionals and DIYers who value efficiency and tool care.
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#10 Top Pick
Hymnorq 15-Piece M35 Cobalt Drill Bit Set, Metric 1.5 to 10mm, 5% Cobalt HSS for Drilling Hard Metal Stainless Steel Cast Iron, Fully Ground Jobber Length Bits with 135° Split Point Tough Indexed Case
Brand: Hymnorq
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- TRUE M35 GRADE COBALT STEEL: Manufactured from premium High-Speed Steel containing 5% Cobalt (HSS-Co), these bits are heat-hardened to cut through tough abrasive materials. They offer significantly higher heat resistance and wear durability compared to standard HSS bits, making them the ultimate choice for drilling into stainless steel, cast iron, and titanium alloys.
- PRECISION 135° SPLIT POINT: Equipped with a 135-degree self-centering split point, these bits bite into the material immediately upon contact. This active cutting tip prevents "walking" or wandering across the work surface and eliminates the need for a pre-punch pilot hole, ensuring accurate and clean starts every time.
- FULLY GROUND & EFFICIENT: Unlike roll-forged alternatives, our bits are fully ground for precise dimension accuracy and concentricity. The precision-engineered dual twist flute design ensures rapid chip removal, effectively reducing friction and heat buildup for a smoother, cooler drilling process.
- 15PC METRIC SIZE COVERAGE: This comprehensive metric set includes 15 essential sizes: 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 8, 9, and 10mm. It is a versatile kit suitable for a wide range of projects in metalworking, automotive repair, and general DIY on wood, plastic, aluminum, and hard metals.
- HEAVY-DUTY INDEXED CASE: The bits are housed in a rugged, impact-resistant ABS plastic case with rubberized corners for extra protection. The case features a folding design with clearly marked size indexes (raised lettering) for easy identification, keeping your tools organized, secure, and ready for transport to any job site.
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