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Jobber drill bits are essential for creating precise holes in various materials, from wood to metal. Selecting the right type ensures efficient work, prolongs tool life, and prevents material damage. Understanding key features can help you make an informed decision for your specific needs.
Titanium Nitride Coating Pilot Point for Longer Life
Starts on contact for cleaner holes
No spin shanks
Tapered web provides greater durability to reduce breaking
Includes sizes from 1/16-inch to 1/2-inch in a plastic tough case
Includes: 1/16' x 2, 5/64' x 2, 3/32' x 2, 7/64' x 2, 1/8' x 2, 9/64' x 1, 5/32' x 1, 11/64' x 1, 3/16' x 1, 13/64' x 1, 7/32' x 1, 15/64' x 1, 1/4 x 1, 5/16' x 1, 3/8' x 1, 1/2' x 1
MADE FROM HIGH-SPEED STEEL AND 5% COBALT: improve much higher heat resistance because of cobalt steel's high red hardness, provide strong durable performance compared to typical hss drill bits
CAN BE REPEATEDLY SHARPENED AS NEEDED: cobalt drill bit's hardness is uniform throughout the entire material, so that can be repeatedly sharpened without damaging the cutting edge allowing it to drill more than hss drill bits
APPLICATION: best used for drilling in hard metal, including stainless steel
INCLUDE: 12 pieces of 1/4-inch cobalt drill bits with case
M35 Cobalt Drill Bit: Premium High Speed Steel M35 (Cobalt 5%) offers superior heat resistance and greater hardness compared to ordinary drill bits. It can extend the tool's service life when drilling hard materials.
135° Split Point Design: The cobalt drill bit set can be used effectively on most soft and hard objects, with a 135 degree point tip with round straight shank, self-centering to prevent walk-off, make drilling precise and faster.
Efficient Drilling: Fully Ground twist design helps clear particles faster, decreases friction and heat for a cooler drilling performance.
Various Sizes: 115 sets of drill bits include 29pcs Fractional Size:1/16” to 1/2” in 1/64th increments; 26pcs Letter Size: A To Z; 60pcs Numbered Size: #1 To #60.
Widely Used: M35 Cobalt High Speed Steel is more suitable for tough, high tensile strength material. Particularly successful in cutting harden metals such as stainless steel, cast iron, high temperature alloy, titanium alloy, hard plastics and woods.
Convenient Storage: This drill tool assembly is equipped with a drill bit holder with size markings and is packaged in a compact and sturdy form, making it easy to store and categorize. If you have any questions, please contact us and we will respond...
Various Sizes: 13 sets of drill bits include 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", can meet more needs
M35 Cobalt Drill Bit: The M35 cobalt drill bit is a durable, sharp and robust drill bit suitable for cutting stainless steel, iron castings, copper, aluminum and other soft metals as well as plastics, wood etc
Quick and Efficient: The cobalt drill bit set can be used effectively on most soft and hard objects, with a 135 degree point tip and twist design for faster cutting, self-centering to prevent walk-off and faster chip and particle removal
HSS Drill Bit Set: HSS cobalt drill bit set for hardened steel with excellent cutting performance. 13 sets of drill bits for long term use. The inserts are hardened and polished for improved sharpness and precise cutting without wobbling
Easy Storage: The drill set includes a drill case with size indexes and is packaged in a small package for easy storage and sorting. If you have any questions, please refer to us and we will be happy to help you
【Cost-effective combination】: Pro edge 29pcs Jobber drill bits set includes 29 sizes from 1/16" to 1/2". With an average price per bit lower than the M2 Jobber Drill Bits market average price.
【High Quality HSS】The jobber drill bits set made of high-quality HSS with a gold titanium coating. It not only enhances hardness but also improves heat resistance and wear resistance. It can withstand high temperatures, minimize drill bit wear.
【135° Split Point & Twist Design】: The 135 degree design reduces the pressure required for the drill bit to penetrate materials, making it more suitable for hard materials and helping the drill bit self locate and not easily shake, ensuring machining...
【Can Be Widely Used】: Suitable for cutting stainless steel, cast iron parts, copper, aluminum, and other soft metals, as well as plastics, wood, etc., whether it is woodworking, metal processing, home maintenance, or DIY, it can be easily handled.
【Purchase Benefits】: The Jobber drill bits set includes a sturdy and aesthetically pleasing packaging box for easy storage and classification. Make sure you pull up the tab on the top of the case when opening to avoid damage. If you have any...
Last update on 2026-07-18 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Jobber Drill Bits
Material Type
Consider the primary materials you'll be drilling into. High-speed steel (HSS) is a versatile choice for wood, plastics, and soft metals. Cobalt bits offer superior hardness and heat resistance, making them ideal for drilling into stainless steel and other tough alloys. Titanium-coated bits provide an extra layer of hardness and lubricity for increased lifespan in metals.
Bit Diameter and Length
The required diameter of your holes will dictate the drill bit size. Standard jobber bits come in a wide range of diameters. Length is also crucial; longer bits allow you to drill deeper holes, but shorter bits generally offer more rigidity and accuracy.
Flute Design
The flutes are the spiral grooves on the bit. Standard 118-degree flutes are suitable for general-purpose drilling in softer materials. A 135-degree split-point tip is often preferred for harder metals as it reduces the need for a pilot hole and prevents the bit from wandering.
Frequently Asked Questions
What is a jobber drill bit?
A jobber drill bit, also known as a general-purpose drill bit, is designed for drilling holes in a wide variety of materials. They are characterized by their medium length and are a common choice for both DIYers and professionals.
How do I choose the right material for my drill bits?
For general use on wood, plastic, and softer metals, high-speed steel (HSS) is a good option. If you frequently drill into harder metals like stainless steel or cast iron, consider cobalt or titanium-coated bits for better durability and heat resistance.
What is the difference between 118-degree and 135-degree drill bits?
The angle refers to the point of the bit. A 118-degree angle is standard for general-purpose drilling in softer materials. A 135-degree angle, often with a split point, is better for harder metals as it offers more stability and reduces the risk of the bit wandering.
How long should my drill bit be?
The length of the drill bit depends on the depth of the hole you need to create. Jobber bits are medium length, suitable for most common applications. For very deep holes, you might need to consider extension bits.
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