Are these good for make holes in steel material?

Yes，good for drilling steel.Generally, sellers purchase products from the market and sell them on e-commerce platforms. The STROTON drill bits we sell are designed and produced by our factory, including the case, which is unique on the market. This drill bit contains 6% cobalt, which is higher than general products. In addition, STROTON hss drill bits have a secret heat treatment recipe.So They’re good at drilling steel.

Where are these made?

They are made in China. They are very good cobalt drill bits set.It is designed and manufactured by STROTON, different from the similar products in the market.

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

Help Track order

Account Cart

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

Help Track order

Account Cart

Cobalt Drill Bit Set (1/16-1/2 Inch, 17PCS), M35 High Speed Steel Twist Drill Bits for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood

Cobalt Drill Bit Set (1/16-1/2 Inch, 17PCS), M35 High Speed Steel Twist Drill Bits for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood

Product ID: 430998172

Details

Cutting Angle String
135 degrees
Cutting Diameter
0.5 inches
Finish Type
Steel
Material
Cobalt
Shank Type
3-flats Round

🔥68 HRC hardness for superior heat resistance

⏱️2-3x faster drilling speed

⚙️5% Cobalt Steel for ultimate durability

€ 59.70

Duties & taxes included

In stock

Sold byAmazon GERMANYDelivered 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 GERMANY.

Secure transaction

Description

⚡ Drill Smarter, Not Harder — Own the Jobsite with Cobalt Power!

UNMATCHED DURABILITY - Premium M35 cobalt steel ensures long-lasting performance even on the toughest metals.
VERSATILE SIZE RANGE - 17-piece set covers 1/16 to 1/2 inch for all your drilling needs across metal, wood, and plastic.
PRECISION CUTTING EDGE - Triple-ground 135° split point design delivers clean, chip-free holes every time.
SPEED MEETS EFFICIENCY - Drill 2-3 times faster with less wear, reducing your cost per hole dramatically.
PROFESSIONAL GRADE PERFORMANCE - Engineered for stainless steel, cast iron, and hard metals—trusted by pros who demand the best.

The STROTON Cobalt Drill Bit Set features 17 precision-engineered M35 high-speed steel bits with 5% cobalt, delivering exceptional hardness (68 HRC) and heat resistance. Designed for professional-grade drilling through stainless steel, cast iron, plastics, and wood, this set offers faster drilling speeds and longer tool life, making it the ultimate choice for managers and pros who refuse to compromise on quality or efficiency.

Specifications

ASIN	B09MRW8399
Best Sellers Rank	#76,831 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #170 in Jobber Drill Bits
Brand Name	STROTON
Customer Reviews	4.6 4.6 out of 5 stars (564)
Cutting Angle String	135 degrees
Cutting Diameter	0.5 inches
Finish Types	Steel
Item Dimensions	7.09 x 5.12 x 1.57 inches
Manufacturer	STROTON Ltd
Material Type	Cobalt
Minimum Bore Diameter	0.06 inches
Model	Cobalt 6 series bits inch 1/16-1/2
Number of Flutes	2
Number of Packs	1
Number of Pieces	17
Part Number	Cobalt 6 series bits inch 1/16-1/2
Point Style	Split Point
Set Name	17-Piece Set
Shank Type	3-flats,Round
Surface Recommendation	Cast Iron,Metal,Plastic,Stainless Steel,Steel,Wood
Tool Flute Type	Straight
UPC	643459994935
Unit Count	1 Count

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.