Can these drill bits cut through hardened steel or stainless steel?

Yes. M35 grade steel with 5% Cobalt is specifically engineered for high-tensile metals like stainless steel, cast iron, and titanium alloys. For fully hardened steel (HRC > 50), carbide bits are recommended.

Will these bits fit my standard cordless drill?

Yes. These feature standard round straight shanks. The largest diameter is 10mm, allowing them to fit securely into any standard 3/8-inch (10mm) or 1/2-inch (13mm) drill chuck.

Do I need to use cutting oil or lubricant?

Highly recommended. While Cobalt is heat-resistant, using cutting fluid significantly reduces friction and heat buildup. This prevents the bit from annealing (softening) and greatly extends its lifespan.

Do these bits require a center punch to start?

No. These bits feature a 135° Split Point tip. This design is self-centering and cuts immediately upon contact with the metal, preventing the bit from "walking" or skating across the surface.

Are these bits just coated with Cobalt or solid?

They are solid M35 Cobalt steel throughout, not just coated. Unlike titanium-coated bits that lose effectiveness once sharpened, these maintain their heat resistance and performance even after resharpening.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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15-Piece M35 Cobalt Drill Bit Set, Metric 1.5-10mm for Hard Metals

15-Piece M35 Cobalt Drill Bit Set, Metric 1.5-10mm for Hard Metals

Product ID: 86329568

Details

Cutting angle string
135 Degrees
Cutting diameter
10 Millimetres
Finish type
Bronze
Material
Cobalt Steel
Shank type
Straight

🎯135° split point for precise, no-walk drilling

🔥5% Cobalt for extreme heat resistance

🛠️15 metric sizes in rugged ABS case

MOP$611

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Description

🛠️ Drill Hard, Drill Smart — Own Every Project with Precision!

SMOOTH COOL DRILLING - Fully ground dual-flute design ejects chips fast, reducing friction and overheating.
VERSATILE METRIC RANGE - 15 essential sizes from 1.5mm to 10mm cover all your metal, wood, and plastic projects.
BUILT TO LAST ORGANIZED - Heavy-duty ABS case with rubber corners and raised size markings keeps your set safe and ready on the go.
CUT THROUGH HEAT HARDNESS - M35 cobalt steel keeps sharp under intense heat—no burnout, just power.
PINPOINT ACCURACY EVERY TIME - 135° self-centering split point bites instantly—ditch the pilot hole and drill like a pro.

The Hymnorq 15-Piece M35 Cobalt Drill Bit Set features premium 5% cobalt high-speed steel for superior heat resistance and durability. Its 135° split point ensures precise, no-walk starts, while fully ground dual-flute bits provide smooth chip removal and cooler drilling. Covering metric sizes 1.5mm to 10mm, this set is housed in a rugged ABS case designed for professional organization and portability, making it ideal for metal, wood, and plastic applications.

Specifications

ASIN	B07B7L6WVY
Best Sellers Rank	532,618 in DIY & Tools ( See Top 100 in DIY & Tools ) 512 in Jobber Drill Bits
Brand	Hymnorq
Customer Reviews	4.3 out of 5 stars 388 Reviews
Cutting Angle String	135 Degrees
Cutting Diameter	10 Millimetres
Cutting angle string	135 Degrees
Cutting diameter	10 Millimetres
Finish Types	Bronze
Finish type	Bronze
Included Components	15 pieces of metric cobalt drill bits
Item Dimensions	15 x 11 x 4 centimetres
Item Highlight	135° Self-Centering Split Point Prevents Walking; Fully Ground Dual Flutes Reduce Friction; Rugged ABS Indexed Storage Case
Manufacturer	Hymnorq
Manufacturer Part Number	B07B7L6WVY
Material	Cobalt Steel
Minimum Bore Diameter	1.5 Millimetres
Model Number	B07B7L6WVY
Number of Flutes	2
Number of Packs	1
Number of Pieces	15
Point Style	Split Point
Set Name	15PC Set
Shank Type	Straight
Shank type	Straight
Surface Recommendation	Metal
Tool Flute Type	Spiral
UPC	666389162076
Unit Count	1.0 count

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MOP$611

Duties & taxes included

In stock

Sold byAmazon MacauDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Macau.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

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