Best Cobalt Jobber Drill Bits of 2025

The Drill America 29 Piece Cobalt Drill Bit Set includes high red hardness, Aerospace standard 907, and gold oxide finish to provide lubrication and wear resistance. The cobalt steel drills are suitable for hard materials like stainless steel, Inconel, and titanium, and offer extended tool life compared to high-speed steel bits. The round shank design makes it compatible with various tool holding systems, and the round drill index is easy to carry and offers a unique combination of form and function.

COMOWARE Cobalt Bits is a 15-piece drill bit set made of 5% Cobalt High-Speed Steel M35, which provides a longer lifespan than standard drill bits. The 135° split point, gold oxide finish, and round straight shanks make this set stand out in terms of precision, chip-clearing, and performance. This set is ideal for drilling through hard materials such as stainless steel, cast iron, high-temperature alloys, titanium alloys, hard plastics, and woods. The set comes with a plastic storage case, making the bits easy to organize and access. In addition, COMOWARE offers a 100% satisfaction guarantee, so if you are unsatisfied with your purchase, you can contact them for help.

The DEWALT Cobalt Alloy Steel Drill Bit Set comes with a patented bit-bar design and connectable accessory storage system, making it convenient to store and customize the placement of the drill bits. The clear lid allows for easy visibility, while the clip latch ensures secure closing. The small bulk storage size fits perfectly inside the Small and Medium ToughCase+, making it ideal for organizing loose bits for wood, metal or i-beams.

The JEFE HEX 29 PCS Cobalt Drill Bit Set is made of high-speed steel with 5% cobalt that resists high heat abrasion while drilling. It has a gold oxide finish that acts as a lubricant and provides wear resistance. The set comes with a portable round carrying case with built-in clip for easy attachment to your tool belt. It features a self-centering 135° split point drill tip that penetrates hard materials without a pilot hole and clears chips and particles fast. The set is ideal for versatile applications, especially for projects made from stainless steel, cast iron, high temperature alloy, titanium alloy, hard plastics, and wood.

The Sinyeenglon Drill Bit Set features M35 cobalt material, which offers exceptional hardness and durability, making it ideal for cutting through tough metals like stainless steel and titanium. The full grinding process enhances wear resistance, ensuring that these bits remain sharp for longer periods. The sturdy plastic storage case is thoughtfully designed for easy organization, allowing you to quickly find the size you need. Each compartment is clearly labeled, providing you with convenient access to the right drill bit without any hassle.

This pack includes 12 pieces of 1/4-inch cobalt steel M35 jobber length twist drill bits with a case. The bits feature a 135 degree split point, 3-flat shank, and can be repeatedly sharpened without damaging the cutting edge. Made from high-speed steel and 5% cobalt, they provide strong and durable performance, and are best used for drilling in hard metal, including stainless steel.

The Drill America Cobalt Drill Bits set features gold stepped point technology that allows you to start drilling effortlessly and achieve faster results. These bits are ideal for enlarging existing holes or creating new, smooth holes in various materials like acrylic, steel, and brass. With a 135-degree cutting angle and a special shank design, you can expect better control and reduced spinning while you work. The set includes a range of inch sizes, making it versatile for different projects, so you’ll always have the right size on hand.

The GMTOOLS 115Pcs Cobalt Drill Bits Set features 115 pieces of drill bits with a precision grinding process, 135° split point and twist design for faster and easier drilling, and enhanced M35 alloy material with 5% cobalt alloy steel for increased wear resistance and durability. It also includes a drill bit holder with size index for easy storage and organizing. This jobber drill bit set is perfect for drilling through hardened metal, cast iron, stainless steel, plastic, and wood.

The Chicago Latrobe Jobber Length Drill Bit Set is a 21-piece set that includes inch sizes 1/16" through 3/8" in 1/64" increments. Made from cobalt steel, this set provides extended tool life compared to high-speed steel drill bits when drilling hard materials. The gold oxide finish lubricates and provides wear resistance on ferrous materials, while the self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging. Additionally, the extra thick web increases strength and rigidity compared to standard drill bits. Made in the USA.

The KENDO Cobalt Drill Bits offer exceptional performance for various materials. Crafted from high-speed steel with 5% cobalt, these bits provide durability and resistance to wear. The self-centering 135-degree split point tip allows for effortless drilling, making it easier for you to penetrate tough surfaces. Additionally, the bits are hardened and polished, ensuring fast drilling and efficient removal of debris. With a wide range of sizes included, this set is versatile enough for both hard metals and softer materials, making it a valuable addition to your toolkit.