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.

19pc Set | Desertcart Togo

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Sold byAmazon TogoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔥 Drill Like a Pro, Last Like a Legend ⚙️

PRECISION DRILLING - 135° split point design prevents walking for flawless, self-centering starts every time.
RUGGED ORGANIZATION - Heavy-duty metal case with clear size markings keeps your bits secure and ready on the go.
UNMATCHED DURABILITY - M35 cobalt steel with 5% cobalt delivers up to 12X longer life than standard bits.
COMPLETE METRIC RANGE - 19-piece set covers 1mm to 10mm in 0.5mm increments for every project need.
VERSATILE METAL MASTERY - Effortlessly cuts through stainless steel, cast iron, titanium, and softer materials alike.

The Hymnorq 19-Piece M35 Cobalt Steel Metric Drill Bit Set features premium high-speed steel with 5% cobalt, achieving a Rockwell hardness of 67 for exceptional heat resistance and durability. Its 135° split point design ensures precise, walk-free drilling across a full range of metric sizes from 1mm to 10mm. Housed in a rugged metal case, this set is engineered to tackle tough metals like stainless steel, cast iron, and titanium while maintaining versatility for softer materials, making it the ultimate heavy-duty drill bit collection for professionals and enthusiasts alike.

Specifications

ASIN	B07FXK9VHV
Best Sellers Rank	#25,466 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #15 in Metalworking & Multipurpose Drill Sets
Brand	HYMNORQ
Brand Name	HYMNORQ
Customer Reviews	4.3 out of 5 stars 187 Reviews
Cutting Angle String	135 degrees
Cutting Diameter	1 millimeters
Finish Type	Bronze
Finish Types	Bronze
Included Components	19 piece of metric cobalt drill bits
Item Dimensions	6.02 x 4.17 x 1.69 inches
Item Highlight	135° Split Point Prevents Walking; Cuts Hardened Alloys, Cast Iron & Titanium; 67 Rockwell Hardness; Heavy-Duty Index Case
Item Weight	16 ounces
Manufacturer	Hymnorq
Material	Cobalt Steel
Material Type	Cobalt Steel
Model	43398-50823
Number of Flutes	2
Number of Packs	1
Number of Pieces	19
Part Number	B07FXK9VHV
Point Style	split
Set Name	19pcs(Metal Case)
Shank Type	Straight
Surface Recommendation	Stainless Steel, Brass, Copper, Iron, Aluminum Alloy, Angle Steel, Cast Iron, Wood, Plastic
Tool Flute Type	Spiral
UPC	666389485861
Unit Count	1 Count

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