Best Cobalt Jobber Drill Bits of 2026

The BOSCH CO14B 14-Piece Cobalt M42 Metal Drill Bit Set is designed for durability and high heat resistance. It contains upgraded M42 Cobalt jobber-length bits that can handle stainless steel, cast iron, titanium, light-gauge metal and aluminum. The set includes 14 drill bits with sizes ranging from 1/16" to 1/2". With a thick web-helix design and surface-hardened tip, these bits offer additional stability in tough applications and can penetrate tough abrasive materials.

The Pro Edge Cobalt Drill Bits set offers 13 different sizes, ranging from 1/16" to 1/4", letting you pick the perfect bit for your project with precision. Made from M35 high-speed steel with 5% cobalt, these bits are built to last much longer than standard bits, saving you time and money on replacements. Their 135-degree split point design makes drilling into tough materials like stainless steel and cast iron easier by reducing the effort needed and preventing slipping. Plus, the twist design quickly clears out debris, helping you work faster and more accurately on various materials including wood and plastic.

The MACXCOIP Cobalt Drill Bit Set is a 13-piece set of M35 high-speed steel bits designed for hardened metals, stainless steel, cast iron, and wooden plastics. The 135-degree point tip and twist design allow for faster cutting and self-centering to prevent walk-off. The set includes a drill case with size indexes for easy storage and sorting.

The Yellow Paw 5/8" Drill Bit offers a 5/8 inch diameter and a total length of 6 inches, with a 3-inch working area. This size makes it easy to fit into most drills and rotary hammers, giving you versatility for various projects. Made from M35 cobalt and coated with titanium aluminum nitride, this bit is built to resist wear and last longer, especially when drilling tough metals. The 135-degree split point design helps keep the bit steady, so you can drill accurately into harder materials like stainless steel without slipping. Plus, the company is US-based, ensuring reliable customer support whenever you need it.

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.

The Greycore Cobalt Drill Bit is built to last and perform well across various materials. Its M35 cobalt construction with 5% cobalt content gives you a tough bit that resists wear and heat, making it perfect for drilling into hard metals. The industrial titanium coating adds extra protection against abrasion, so your bit stays sharp longer. With a 135-degree split point tip, you get precise starts without slipping, allowing you to drill faster and more smoothly. This bit works well on metals, wood, and plastics, making it a versatile tool for your repair or woodworking projects.

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.

The EFFICERE 8-Piece Premium Large Drill Bit Set features cobalt high speed steel construction, dual coating finish, 135° split point design, and a 1/2 inch reduced shank with tri-flatted end. This set includes 8 pieces of 6” long silver & deming drill bits in a heavy-duty aluminum storage case, which can drill holes in various materials with increased cutting speed and self-centering feature. The dual coating finish holds up lubricant better for smoother drilling and is 80% more durable and corrosion-resistant than regular black enamel finish.

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.

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.