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Cobalt Metal Drill Bits
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8% Cobalt TiN Drill Bit BZECTZAYI-12MM
Made of 8% high cobalt steel, excellent heat resistance for hard metal drilling TiN titanium nitride coated surface improves hardness and wear resistance Standard DIN338 industrial specification with precise dimensional tolerance Optimized spiral flute design for smooth chip evacuation without clogging Sizes 1mm-13mm, ideal for stainless steel, alloy steel and iron machining
£61.63
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Amazon Marketplace - 闻莱商贸

3PCS M35 AlTiN Cobalt Hex Shank Step Drill Bit Set MNACMMASK
3PCS M35 cobalt step drill bit set for metal hole drilling work 1/8"-7/8" sizing meets diverse hole making needs in daily processing 1/4" hex shank fits regular metal drilling tool connection demands AlTiN coated surface for wear-resistant performance in drilling operation Practical step drill set for various metal drilling work scenarios
£116.54
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Amazon Marketplace - Dongyuan County Hanwei E-Commerce Co., Ltd.

3PCS M35 Cobalt Step Drill Bits, 4-20mm 9-Step Cone Cutter BECZAZDAZ
Product Sizes: 9-step design (4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm); flute length: 52.3mm; shank diameter: 6.30mm; material: HSS M35 (HSS-Co5) cobalt steel. Features 1/4" hex shank, with 1/2" square to 1/4" hex adapter included; black spiral flute Reliable Design & Efficient Drilling: 118° X-type split point for precise positioning and anti-slip; hex shank ensures tight clamping. Black spiral flute enables smoothly chip removal, reducing resistance and clogging. M35 cobalt steel offers durability; cone structure meets multi-hole size needs, saving time Package: Includes 3PCS HSS M35 step drill bits (black spiral flute), 3 hex shank adapters, and 3 sets of retaining ring & pin (rubber O-ring + lock pin). The free retaining ring & pin set prevents sockets from falling off the adapter. The adapter converts 1/2" square drive (for impact wrenches) to 1/4" hex shank – essential for impact wrenches, optional for other electric drills. Versatile Uses: Suitable for drilling aluminum, iron, steel (≤5mm thick), and 304 stainless steel (≤1mm with hand drill, ≤2.5mm with bench drill). Ideal for metalworking, electrical, plumbing, DIY, and construction. Compatible with impact wrench, bench drill, hand drill, and cordless drill. Notes: Keep water cooling during operation to extend bit life. Do not use on concrete, tiles, glass, or other hard materials. Check device compatibility before ordering.
£63.06
Shipping: Free
Amazon Marketplace - QINWUHOME

Century Drill & Tool 74105 Cobalt Left Hand Drill Bit, 5 Piece Set B004UUA5G0
Cuts Through Tough Metals and Fasteners with Ease: Crafted from durable M35 cobalt steel, these Century left-hand drill bits are engineered to cut through hardened metals, bolts, and studs—offering excellent wear resistance and long-lasting performance in tough applications. Self-Centering 135° Quick-Cut Points for Accurate Starts: Designed with Century’s 135° quick-cut points, these bits start precisely without the need for a center punch—reducing walking and allowing for faster, cleaner drilling with less pressure. Mechanics Length for Strength and Stability: The shorter, mechanics length style offers greater strength and control during precision drilling—ideal for extracting broken fasteners or working in tight spaces where accuracy is critical. Heavy-Duty Web Construction for Breakage Resistance: Reinforced with a thick web design, these bits provide added durability and reduce the risk of breakage when drilling into hardened materials or using in demanding shop or jobsite environments. Essential 5-Piece Set for Left-Hand Drilling: Includes 1/8", 3/16", 1/4", 5/16", and 3/8" left-hand drill bits—perfect for reverse drilling, broken screw removal, and other specialized tasks where standard bits won’t do the job., Manufacturer: Century Drill & Tool
£29.55
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Amazon

Drill America 17.50mm Reduced Shank Cobalt Drill Bit with 1/2" Shank, D/AMMCO Series SF-DINAN-32852617264
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
£87.43
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Amazon Marketplace - Tony's✯Diamond

4241 Cobalt Step Drill Bit Set 50 Sizes BPVYPYLDB
4241 cobalt step drill bit set featuring 50 sizes for versatile drilling applications Efficient multiple hole cone bit design allows drilling various diameters with one tool Durable construction effectively cuts through metal, wood, and plastic materials Comes with a sturdy aluminum case for organized storage and easy portability Ideal tool for electricians, plumbers, and general home or industrial maintenance projects
£71.46
Shipping: Free
Amazon Marketplace - Shenzhen Aoxikang E-commerce Co., Ltd.

Titanium Cobalt HSS Cone Step Drill Bit MNACMMCCK-CO-STRAIGHT-15STEP
Blend cobalt into HSS base and add titanium coat to boost wear and heat resistance Spiral and straight flute structures discharge metal scraps fast to avoid drill clogging Three standard size ranges fit diverse hole expansion demands of different workpieces Layered cone steps cut tidy low-burr holes on steel metal and wooden panels alike Pair well with standard electric drills for repair and small batch machining projects
£64.62
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Amazon Marketplace - Dongyuan County Hanwei E-Commerce Co., Ltd.

M35 Cobalt Titanium Spiral Flute Step Drill Bit Set MNACMMASS
M35 cobalt high speed steel greatly enhances hardness for hard metal cutting work Uniform titanium coating upgrades abrasion resistance and extends drill service life Spiral flute design quickly removes metal shavings to avoid drill clogging while drilling Standard hex shank fits most electric drills for stable clamping during processing 4mm to 32mm metric sizes meet diverse hole expansion demands of different workpieces
£64.26
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Amazon Marketplace - Dongyuan County Hanwei E-Commerce Co., Ltd.

1/3PCS HSS Cobalt Step Drill Bit Set BPVYPYPAG-3PCSNOBOX
Available as a single piece or 3-piece set, covering sizes from 4mm to 32mm for multiple hole diameters. Made from high-speed steel (HSS) with cobalt and nitrogen surface treatment for improved durability. Spiral flute design ensures efficient chip removal and smoother cutting in demanding applications. Triangle shank provides better grip and reduces slippage in standard drill chucks. Optimized for clean, precise drilling in metal, stainless steel, aluminum, and other hard materials.
£70.07
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Amazon Marketplace - Shenzhen Aoxikang E-commerce Co., Ltd.

Century Drill and Tool 26121 Cobalt High Speed Steel Drill Bit Set, 21-Piece B009C7ETJK
Designed for drilling in extremely hard materials including stainless steel Cobalt drill bits have a great resistance to heat and friction providing a longer tool life No center punch needed Manufactured to Aerospace NAS 907-J specifications Made in the USA, Weight: 0.02 pounds, Manufacturer: Century Drill & Tool Corp
£60.45
Shipping: Free
Amazon

8% Cobalt TiN Drill Bit BZECTZAYI-12.5MM
Made of 8% high cobalt steel, excellent heat resistance for hard metal drilling TiN titanium nitride coated surface improves hardness and wear resistance Standard DIN338 industrial specification with precise dimensional tolerance Optimized spiral flute design for smooth chip evacuation without clogging Sizes 1mm-13mm, ideal for stainless steel, alloy steel and iron machining
£64.67
Shipping: Free
Amazon Marketplace - 闻莱商贸

5Pcs HSS Cobalt Titanium Step Drill Bit Set MNACMMCEL
This set includes five HSS cobalt titanium conical step drill bits for processing Offers fifty different hole sizes to match various hole expansion construction tasks Integrated conical cutting structure helps form smooth round holes on plates Composite cobalt titanium material improves cutting performance on hard metals Universal perforator tool suitable for daily maintenance and workshop machining
£54.92
Shipping: Free
Amazon Marketplace - Dongyuan County Hanwei E-Commerce Co., Ltd.

Bosch 2609255109 Metal Drill Bits B0071NAQOO
As a leading manufacturer for power tools accessories, Bosch offers the ideal accessories for virtually all applications It is our aim to develop appropriate accessories for more efficient working The research and development departments at Bosch work to develop and optimise accessories in line with the needs of users, Manufacturer: Bosch
£10.82
Shipping: £4.49
Amazon

Century Drill and Tool 26713 Cobalt High Speed Steel Drill Bit Set, 13-Piece B009C7ETKO
Set includes 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32". cm, 15/64" and 1/4" Jobber length cobalt drill bit. Set includes 1/16" to 1/4" in 1/64" increments. Century Pro Grade drill bits are made of M35 cobalt alloy high speed steel. Lasts up to 12 times longer than the average high speed steel drill. 135 quick cut point penetrates faster and will not run or wander at the output surface. Requires no punch or pilot drill. Cobalt alloy high speed steel is extremely heat resistant. Resists wear when cutting carbide Polished finish ensures excellent chip ejection. Recommended for cutting stainless steel, high alloy steel, mild steel and cast iron. Always use cutting oil when drilling metal. Made in the USA., Weight: 0.7 pounds, Manufacturer: Century Drill & Tool Corp
£19.21
Shipping: £4.49
Amazon

Drill America DWDCO6P12#6 Cobalt Drill Bit (Pack of 12), DWDCO Series 1-4145-B00FXHE0EW-____________
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
£37.25
Shipping: Free
Amazon

IRWIN HSS Cobalt Drill Bit Set, 15 Piece in Brown M5054905247836
IRWIN HSS Cobalt Drill Bits are perfect for drilling stainless steel and other high alloys. Their 135 split point grinding ensures perfect centring and reduced drilling pressure. An industrial quality ground flute ensures high accuracy drilling and fast removal of chips. The drill bit body is manufactured from high-quality HSS steel containing 5% cobalt (Co). The added 5% cobalt improves the red hardness (heat resistance) of the drill bit and results in significantly extended life. It has an attractive golden tempered surface finish. This 15 Piece Set contains the following sizes: 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 8, 9, 10mm. | IRWIN HSS Cobalt Drill Bit Set, 15 Piece in Brown
£72.12
Shipping: Free
Debenhams UK

M2 Cobalt HSS Titanium Step Drill Bit Hex Shank Tool MNACMMCEG
Constructed with M2 cobalt HSS base to deliver outstanding wear resistance performance Covered with uniform titanium coating to lower friction during continuous cutting Feature standard 1/4 inch shank for quick mounting on most impact drill devices Cover aperture range from 7/8 inch to 1-3/8 inch to meet diverse expansion demands Fit various metal processing projects with stable cutting and long service lifespan
£68.94
Shipping: Free
Amazon Marketplace - Dongyuan County Hanwei E-Commerce Co., Ltd.

fischer 543330 Cobalt Drill Bits (25 Pieces), Grey, Set of Pieces B08L5897X7
Main advantages: Fischer Hss-Co drill bits are perfect for drilling in hard metals such as Inox. Being milled can be re-sharpened increasing its service life, plus the cobalt alloy and the 135 degree angle on the tip also make the drill bit more durable. How to use: We put the drill bit into the drill, make sure the striker is disabled, lower the machine revolutions and cool for best results while drilling. Applications: This product is designed to drill hard metals such as stainless steel. Sustainability: Fischer stands for the production and distribution of sustainable products, taking care of the highest demands in terms of sustainability. Box contents: 25 fischer HSS-Co drill bits, Weight: 3.2187490252 Pounds, Manufacturer: fischer
£69.71
Shipping: Free
Amazon

5Pcs HSS 4241 Cobalt Step Drill Bit Set MNACMMCGE
Made of HSS 4241 cobalt material for stable drilling performance Offers up to 50 different hole sizes to meet various machining demands Equipped with an aluminum case to organize all drill bits tidily Cone bit structure creates clean round holes on metal and wood Widely used as daily drilling tools for workshop and home projects
£62.53
Shipping: Free
Amazon Marketplace - Dongyuan County Hanwei E-Commerce Co., Ltd.

Drill America 15.50mm Reduced Shank Cobalt Drill Bit with 1/2" Shank, D/AMMCO Series SF-DINAN-32852617251
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
£70.51
Shipping: Free
Amazon Marketplace - Tony's✯Diamond
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