Best Fully Ground Jobber Drill Bits of 2026

Harry Stack Avatar
Harry Stack
Last Updated: Jan 28, 2026

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Fully ground jobber drill bits are a premium quality option for those who demand precision and durability in their drilling tasks. These bits feature a fully ground surface, which ensures a more accurate and consistent hole diameter, as well as a longer lifespan compared to other types of drill bits. They are made from high-speed steel, which makes them ideal for drilling into harder materials such as metal, wood, and plastic. Fully ground jobber drill bits are available in a range of sizes, making them suitable for a variety of applications, from DIY projects to industrial settings.

At a Glance: Our Top Picks

Rocaris 8 Pack Titanium Drill Bits Cover #TOP 1
Rocaris 8 Pack Titanium Drill Bits
ftb score rating icon 9.8
Narwhal 1/8" M35 Cobalt Drill Bits 13-Pack Cover #TOP 2
Narwhal 1/8" M35 Cobalt Drill Bits 13-Pack
ftb score rating icon 9.7
Biaungdo 0.3-1.6mm Mini Micro Drill Bit Set Cover #TOP 3
Biaungdo 0.3-1.6mm Mini Micro Drill Bit Set
ftb score rating icon 9.5

Top 10 Fully Ground Jobber Drill Bits

Rocaris 8 Pack Titanium Drill Bits

Rocaris-289
Gold
Rocaris 8 Pack Titanium Drill Bits Cover
Rocaris 8 Pack Titanium Coated HSS Twist Drill Bits, 3-10mm Serrated Side Cutting Drill Bit Woodworking Tools for Plastic Metal Wood Hole

The Rocaris Titanium Drill Bits set includes eight commonly used sizes, perfect for various drilling tasks. Made from high-speed steel with a titanium coating, these bits are designed to be sharp and efficient, helping you complete projects with ease. The fully ground spiral groove design minimizes friction and heat, allowing for quicker and cooler drilling. Additionally, the 135° split point ensures precise drilling without slipping, making it easier for you to achieve accurate results every time. This combination of features enhances your drilling experience, making it suitable for wood, plastic, and metal applications.

What We Like
Long-lasting sharpness
Versatile size options
Good for aluminum and plastic
Fits standard drills
Sturdy construction

Narwhal 1/8" M35 Cobalt Drill Bits 13-Pack

Cobalt-Drill-Bits-1-8
1/8 in
Narwhal 1/8" M35 Cobalt Drill Bits 13-Pack Cover
Narwhal 1/8 Inch Cobalt Drill Bits (13 Pack - Industrial Grade M35 Cobalt) 2.55" Length & 135 Degree Split Point for Drilling Into Metal, Hardened & Stainless Steel, Cast Iron, & More!

The Narwhal Cobalt Drill Bits come in a 13-pack of 1/8-inch diameter bits, ideal for precise drilling with a flute length of 1-3/8 inches and a total length of 2.55 inches. These bits are made from M35 cobalt, containing 5% cobalt for enhanced durability and heat resistance, making them perfect for tough materials like stainless steel and cast iron. The 135-degree split point helps you start holes easily and keep them accurate when drilling repeatedly into hard metals. Plus, the set includes a sturdy plastic case to keep your bits organized and protected, so you can find and store them conveniently.

What We Like
Durable M35 cobalt material
Precise 135° split point
Compact 13-piece set
Sturdy plastic storage case
#TOP 3

Biaungdo 0.3-1.6mm Mini Micro Drill Bit Set

QY20231122-800
Biaungdo 0.3-1.6mm Mini Micro Drill Bit Set Cover
Biaungdo 0.3-1.6mm Mini Micro Drill Bit Set, 20 Pcs HSS Tiny Drill Bits Shank Twist Drill Bits DIY Kit Rotary Hand Tools for Drill

The Biaungdo Mini Drill Bits set offers 20 high-speed steel drill bits in various sizes from 0.3mm to 1.5mm, giving you plenty of options for precise drilling tasks. Made from durable HSS steel, these bits resist rust and corrosion, ensuring they last through many projects. The set comes in a specially designed small box with individual slots for each bit, making it easy for you to organize, carry, and store the tools without losing any pieces. Whether you're working on jewelry, electronics, or small woodworking projects, this set provides the convenience and quality you need for detailed work.

What We Like
Variety of sizes
High-speed steel material
Rust and corrosion resistance
Compact storage box

SEDIANAS M35 Cobalt Drill Bit Set 15Pcs

SEDIANAS
15 PCS Cobalt Drill Bit Set
15 pcs Cobalt
SEDIANAS M35 Cobalt Drill Bit Set 15Pcs Cover
Cobalt Drill Bit Set - 15Pcs M35 HSS Twist Drill Bits, Straight Shank, Metal Drills bit Set for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic with Index Storage Case, 1/16"-3/8"

The SEDIANAS Cobalt Drill Set offers a durable and efficient solution for drilling through tough materials. Made from M35 high-speed steel with 5% cobalt, these bits resist heat and stay sharp longer, so you spend less time replacing worn tools. The 135° split-point tip helps you start holes precisely without slipping, making your work faster and more accurate. With a fully ground twist design, the bits quickly clear debris and reduce friction, keeping the drill cooler and improving performance. This set comes in a variety of sizes, giving you the flexibility to handle different projects with ease.

What We Like
Heat-resistant M35 cobalt steel
Precise 135° split-point tip
Efficient debris clearing design
Variety of sizes included
Durable and long-lasting

GMTOOLS 29Pcs Drill Bit Set

29pcs
GMTOOLS 29Pcs Drill Bit Set Cover
GMTOOLS 29Pcs Cobalt Drill Bit Set, 135 Degree Tip High Speed Steel with Black and Gold Finish, Stainless Steel, Plastic and Wood with Metal Indexed Storage Case 1/16"-1/2"

The GMTOOLS 29Pcs Drill Bit Set is made of high-speed steel with black and gold oxide finish, featuring a 135°split point that allows for fast cutting and less pressure. Its self-centering design prevents walking, while the fully ground twist design decreases friction and brings metal shavings up and out of the hole. This set includes 29 sizes from 1/16 to 1/2 inch, and comes with a metal indexed case for storage.

What We Like
Durable and long-lasting
Suitable for drilling various materials
Comes with a metal indexed storage case
Great value for the price
Delivers reliable performance
#TOP 6

amoolo Titanium 4341 HSS Drill Bit Set (60 pcs)

AT1901
3/64"-1/8"(60PCS)
amoolo Titanium 4341 HSS Drill Bit Set (60 pcs) Cover
amoolo Titanium Drill Bit Set (60 pcs), Premium 4341 HSS Micro Drill Bits for Wood, Metal, Steel, Plastic, Aluminum Alloy, 3/64"-1/8"

The amoolo Titanium Drill Bits set offers 60 pieces in six popular sizes, giving you plenty of options for your drilling needs. This variety means you can easily replace bits and tackle different projects without searching for extra tools. Made from premium 4341 high-speed steel with a titanium coating, these bits are tougher and last longer, resisting wear and tear. Their spiral groove design helps clear debris quickly, reducing heat and friction, so you get faster, cooler drilling. Plus, the 135° split point ensures precise drilling without slipping, so you don’t need a center punch. These bits work well on wood, soft metals, plastic, and aluminum, making them great for DIY and household tasks.

What We Like
Variety of sizes
Durable titanium coating
Efficient spiral groove
Precise 135° split point
Compatible with most drills
#TOP 7

amoolo M35 1/4" Cobalt Drill Bit Set (10 Pcs)

AT190214
1/4 in (10pcs)
amoolo M35 1/4" Cobalt Drill Bit Set (10 Pcs) Cover
amoolo 1/4" Cobalt Drill Bit (10 Pcs), M35 HSS Metal Drill Bits Set for Hard Metal, Stainless Steel, Cast Iron Box of 10

The amoolo Cobalt Drill Bits come in a set of ten 1/4-inch bits, designed to fit most power drills. Made from M35 high-speed steel with 5% cobalt, these bits are tougher and last longer than regular drill bits, helping you tackle tough metals with ease. Their spiral groove design helps clear debris quickly, reducing heat and friction for faster, cooler drilling. The 135° split point tip keeps the bit steady and prevents slipping, so you can drill more accurately without needing a center punch. This set works well on hard metals like stainless steel and cast iron, plus softer materials like wood and plastic, making it versatile for many projects.

What We Like
Durable M35 cobalt steel
Fits most power drills
Quick debris removal
Precise 135° split point
Versatile for hard and soft materials
#TOP 8

EASTPACE M35 Cobalt 13Pcs Drill Bit Set

EASTPACE
EASTPACEDRILL-13
13Pcs Cobalt Drill
EASTPACE M35 Cobalt 13Pcs Drill Bit Set Cover
EASTPACE 13Pcs M35 Cobalt Drill Bit Set, 1/16 inch-1/4 inch,Twist Jobber Drill Bit Kit for Stainless Steel, Hard Metal and Wood Plastic with Indexed Case

The EASTPACE Cobalt Drill Set is designed with 5% cobalt steel, making it highly durable and wear-resistant. This means you can easily drill through tough materials like stainless steel, cast iron, and hardened steel without worrying about quick wear. Its 135° split point tip helps you start drilling precisely without slipping, giving you better control and accuracy. The fully ground finish allows chips and debris to clear quickly, speeding up your work and keeping the drill bit cooler. Plus, the set includes 13 different sizes stored in a handy indexed case, so you can easily find the right bit for any job.

What We Like
5% cobalt steel durability
Self-centering split point tip
Fast chip removal
Wide size range
Convenient storage case
#TOP 9

AOKLIT Titanium Coated HSS Drill Bit Set 3-10mm, 8 Pack

A-103
3-10mm
AOKLIT Titanium Coated HSS Drill Bit Set 3-10mm, 8 Pack Cover
AOKLIT 3-10mm Titanium Coated HSS Twist Drill Bit, 8 Pack Hex Shank Serrated Cutting Drill Bit Woodworking Tools for Wood Metal Plastic Hole

The AOKLIT Titanium Drill Bits come in eight different sizes, so you always have the right bit for your project. Made from high-speed steel with a tough titanium coating, these bits stay sharp longer, saving you time and effort. They feature a spiral groove design that reduces friction and heat, helping you drill faster and cooler. Plus, the 135° split point and straight shank keep the bit steady and prevent slipping, letting you start holes quickly and accurately. If you want efficient, precise drilling with less hassle, this set is a great choice.

What We Like
Wide size range
Titanium coating durability
Reduced friction and heat
Precise, slip-free starts
Improved chip removal
#TOP 10

HIDOTOL Cobalt Drill Bit Set

LZ-DRILL-13
Gold
Cobalt 13 PCS
HIDOTOL Cobalt Drill Bit Set Cover
HIDOTOL 13 PCS Cobalt Drill Bit Set M35 HSS Twist Drill Bits 1/16"-1/4" for Hardened Metal, Stainless Steel, Cast Iron, Plastic and Wood

The HIDOTOL Cobalt Drill Bit Set is a high-quality set of drill bits that are perfect for drilling into hard materials. Made from premium M35 Cobalt High Speed Steel, these drill bits are incredibly durable and wear-resistant, ensuring extended tool life compared to ordinary drill bits. The 135° split point and self-centering design make drilling precise and efficient, preventing walking and allowing for faster drilling. The fully ground twist design helps clear particles faster, reducing friction and heat for a cooler drilling performance. This set is ideal for cutting tough materials such as stainless steel, cast iron, high temperature alloy, titanium alloy, hard plastics, and woods. With its organized rose plastic case, the set is easy to store and access. Experience the satisfaction of precise and efficient drilling with the HIDOTOL Cobalt Drill Bit Set.

What We Like
Durable
Precise
Versatile
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What is a jobbers drill bit?

Jobber drills are the most widely used type of drill in industry for drilling cylindrical holes. Generally they come with two spiral flutes, straight (or parallel) shanks and an overall length which varies with diameter.

2. What is the difference between jobber and mechanics drill bits?

Determining if you should use a jobber bit vs a mechanics length (jobber) bit, is actually quite simple. A regular jobber bit is best used in softer materials such as wood, composite, and soft metals. For harder materials and hard metal drilling, a mechanics length drill bit is recommended as they are a stronger bit.

3. What is a jobber length bit?

A jobber drill bit has a long length compared to its diameter. The length of the flute is between 8-12 or 9-14 times the diameter of the drill, depending on the drill specifications. For example, a 1/2″ diameter jobber drill will be able to drill a 4-1/2″ deep hole because it is 9 times the diameter in length.

4. What are the 5 types of drill bits?

Drill bits are designed to drill holes in a variety of different common materials. These include different types of wood, metal, plastic, ceramic tile, porcelain and concrete.

Editor's Notes

During our fully ground jobber drill bit research, we found 24 fully ground jobber drill bit products and shortlisted 10 quality products. We collected and analyzed 46,759 customer reviews through our big data system to write the fully ground jobber drill bits list. We found that most customers choose fully ground jobber drill bits with an average price of $13.42.

The fully ground jobber drill bits are available for purchase. We have researched hundreds of brands and picked the top brands of fully ground jobber drill bits, including Rocaris, Narwhal, Biaungdo, SEDIANAS, GMTOOLS. The seller of top 1 product has received honest feedback from 586 consumers with an average rating of 4.9.

Written by
Harry Stack Avatar

Harry Stack owns a small hardware store, his career landed him a depth of knowledge in categories such as tools, equipment, machinery and hardware. In his spare time, he usually repairs furniture, safes and appliances, and he knows how to make simple repairs to plumbing or electrical fixtures. His hobbies also include woodworking and fishing.