How to buy original SPKLINE 10 Pcs 4.8mm (3/16") Cobalt Drill Bit Set in India?

Purchase directly from crowcrowcrow.com for guaranteed authenticity. We import SPKLINE products from authorized US retailers and brand partners, ensuring they are factory-sealed and genuine. All customs duties and GST are included in the listed price, and your order is shipped via ExpressBox tracked delivery, arriving within 12-14 days.

What materials can these 4.8mm (3/16") cobalt drill bits drill through?

These M35 cobalt drill bits are designed for tough materials including stainless steel, cast iron, aluminum, alloy steel, hardened steel, and other hard metals. They also perform well on PCB boards, plastics, wood, and sheet metal, offering 4 times the lifespan of normal bits in these applications.

Will these hex-shank drill bits work in a regular corded drill?

Yes, the straight shank design fits directly into standard three-jaw chucks found on electric and cordless drills. Ensure your drill's chuck can securely grip a 1/4" hex shank for optimal performance and safety.

How does the 135-degree split-point tip benefit drilling?

The 135-degree split-point tip allows the drill bit to start drilling immediately upon contact, preventing it from 'walking' or skating across the surface. This ensures more precise hole placement and reduces the need for a center punch on many materials.

Are these drill bits suitable for use with impact drivers?

While these bits have a straight shank designed for standard drills, they are generally compatible with impact drivers that have a suitable chuck. However, for heavy-duty impact applications, bits specifically rated for impact drivers are recommended to prevent potential fracture.

How long will these SPKLINE cobalt drill bits last?

When used correctly and with appropriate cooling for very hard materials, these M35 cobalt drill bits offer up to 4 times the lifespan of normal metal drill bits, especially when drilling into tough metals and hardened steel.

What is the difference between HSS and Cobalt drill bits?

Cobalt drill bits, like these M35 variants, are High Speed Steel (HSS) bits with added cobalt alloy. This makes them significantly harder, more heat-resistant, and more durable for drilling into harder metals and hardened steel compared to standard HSS bits.

SPKLINE 10 Pcs 4.8mm (3/16") Cobalt Drill Bit Set | High Speed Steel for Hard Metals

Name: SPKLINE 10 Pcs 4.8mm (3/16") Cobalt Drill Bit Set | M35 High Speed Steel with 5% Cobalt Alloy
Brand: SPKLINE
SKU: nyg4217
Price: 1360.00 INR
Availability: InStock

About this item

SPKLINE 10 Pcs 4.8mm (3/16") Cobalt Drill Bit Set provides professional-grade precision for demanding metalworking tasks. Made from industrial-grade M35 High Speed Steel with 5% cobalt alloy, these bits offer superior heat and abrasion resistance, ensuring a long lifespan even when drilling hardened steel. The 135-degree split-point tip starts drilling instantly and prevents bit wandering, making it ideal for stainless steel, cast iron, aluminum, and other tough materials. Imported from authorized US retailers, these bits offer a durable solution for professionals and DIY enthusiasts alike.

These heavy-duty drill bits are engineered for fast, precise hole drilling. Their M35 cobalt alloy construction provides 4 times the lifespan of standard metal drill bits when working with materials like PCB boards, plastics, wood, and normal steel. For optimal results and extended tool life when drilling very hard materials, applying drilling or cooling oil is recommended. The straight shank design ensures compatibility with standard electric and cordless drills, making them a versatile addition to any toolkit.

For Indian users, these SPKLINE drill bits offer a reliable alternative for precision metalworking. The set includes 10 bits, each 85mm in total length with a 50mm working length, conveniently packed in a durable plastic box for easy storage and transport. All customs duties and GST are included in the price, with delivery via ExpressBox tracked shipping, arriving within 12-14 days.

Key Features

10 pcs 4.8mm (3/16") cobalt drill bit set for precise hole drilling into various material. Total 85mm long with 50mm working length
Very tough drill bit for heavy duty work drilling into stainless steel, light-gauge metal, high-carbon steel, aluminum and alloy steel, cast iron, abrasive alloy metal, other hard metal and hardened steel. 4 times life time than normal metal drill bit when drilling into PCB board, plastic, wood, jewelry, sheet metal and normal steel
M35 Cobalt drill bits are made from industrial grade High Speed Steel with 5% cobalt alloy that is heat and abrasion-resistant
135-degree split-point tip starts drilling immediately with less force and eliminates walking or skating across the work surface
Straight shank fits with electric and cordless power drill and rotary drill. Drill bits are packed in a plastic Box that is convenient to carry and store

Why choose this product

Engineered for Extreme Durability

SPKLINE's M35 Cobalt drill bits are built to withstand the rigors of drilling hard metals. The 5% cobalt alloy provides exceptional heat resistance, crucial for maintaining sharpness and preventing premature wear when working with materials like stainless steel and hardened alloys. This superior durability means fewer bit changes and more efficient work, saving you time and effort on demanding projects. Unlike standard HSS bits that can quickly dull on tough surfaces, these cobalt bits maintain their cutting edge, ensuring consistent performance job after job. Imported from authorized US retailers, they represent a commitment to quality and longevity for serious metalworkers.

Ideal for Metalworking Professionals & DIYers

This set is perfect for anyone frequently drilling into hard metals, stainless steel, or hardened alloys. If you're a metal fabricator, IT hardware engineer, or a serious DIY enthusiast working with tough materials, these bits will perform reliably. However, if your projects primarily involve soft woods or plastics and you don't anticipate drilling hardened metals, a standard HSS bit might suffice. For users with standard three-jaw chuck drills, ensure your chuck can securely grip a 1/4" hex shank for optimal performance and safety.

How to use

Choose the SPKLINE 4.8mm (3/16") cobalt drill bit. Ensure your drill chuck is clean and can securely grip the straight shank. For very hard metals, prepare a suitable drilling fluid or oil. — Select the Correct Bit and Drill
Place the 135-degree split-point tip on your marked drilling spot. Apply light, steady pressure. The split point allows immediate drilling without initial slipping or walking. — Position and Start Drilling
Maintain consistent pressure and a steady drill speed. If drilling very hard materials like hardened steel or stainless steel, periodically apply drilling fluid or oil to cool the bit and improve cutting efficiency. — Drill with Steady Pressure and Cooling
Once the hole is complete, withdraw the drill bit smoothly. Clean the bit after use, especially if exposed to humidity, to prevent rust and maintain its longevity. — Withdraw and Clean

Example scenarios

Typical situations where SPKLINE 10 Pcs 4.8mm (3/16") Cobalt Drill Bit Set | M35 High Speed Steel with 5% Cobalt Alloy helps — illustrative scenarios, not customer reviews.

Scenario 1

Illustrative example

Where it helps

A metalworking professional in Delhi needs to drill precise holes in stainless steel fabrication for a custom project.

How this product helps

SPKLINE's 4.8mm cobalt drill bits with a 135° split-point tip ensure accurate, fast drilling without wandering on stainless steel. The M35 HSS alloy provides the necessary hardness and heat resistance for consistent performance, lasting significantly longer than standard bits.

Scenario 2

Illustrative example

Where it helps

A DIY enthusiast in a humid coastal city like Mumbai needs to drill into aluminum and wood for a home repair project.

How this product helps

These versatile SPKLINE drill bits handle aluminum effectively and also work well on wood. The cobalt alloy offers durability, and keeping them dry will prevent rust, ensuring they remain sharp for future projects.

Specifications & installation

Specifications

Primary Material	High Speed Steel (HSS)
Cobalt Content	5%
Heat Resistance	High
Abrasion Resistance	High

Installation & usage

Recommended Use	Drilling into stainless steel, light-gauge metal, high-carbon steel, aluminum, alloy steel, cast iron, abrasive alloy metal, hardened steel, PCB board, plastic, wood, jewelry, sheet metal.
Drilling Angle	135 degrees
Shank Compatibility	Electric drills, cordless drills, rotary drills with chucks accepting 1/4" hex shank.
Cooling/Lubrication	Recommended for very hard materials to improve results and prolong life.
Cost per use	10 bits at 85mm total length: ₹136 per bit
Shelf life after opening	12 months (standard for metal tools)
Reapplication math	Set of 10 bits provides ample replacements for frequent use on hard metals.
Contraindications

How we compare

Feature	SPKLINE 10 Pcs	Others
Material & Durability	M35 High Speed Steel with 5% Cobalt Alloy. 4x longer life in hard metals.	Standard HSS or basic coated bits. Durability varies significantly by brand; often shorter lifespan in hard metals.
Tip Geometry	135-degree Split Point. Starts fast, no walking.	Often 118-degree standard point; may require center punching. Split points less common on budget bits.
Hard Metal Drilling	Excellent for stainless steel, hardened steel, cast iron, alloys.	May struggle or dull quickly with hardened steel and stainless steel; performance varies.
Cost per Bit (approx.)	10 bits for ₹1,360 — ₹136 per bit per bit.	Local HSS bits can range from ₹30-₹80 per bit; cobalt bits ₹100-₹250+ per bit, depending on brand and quality.
Precision & Control	Split point ensures accuracy and reduces bit wander.

SKU	nyg4217
GTIN	0784099652097
Brand	SPKLINE
Set Name	10 Pcs 4.8mm (3/16") Cobalt Drill Bit Set
Material	M35 High Speed Steel with 5% Cobalt Alloy
Shank Type	Straight
Tip Point	135-degree Split Point
Total Length	85 mm (3.35 inches)
Working Length	50 mm (1.97 inches)
Diameter	4.8 mm (3/16 inches)
Number of Pieces	10
Package	Plastic Box
Country of Origin	Not stated by manufacturer — US retail version, sourced from authorized US retailers and authorized brand partners

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SPKLINE 10 Pcs 4.8mm (3/16") Cobalt Drill Bit Set | M35 High Speed Steel with 5% Cobalt Alloy

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