Best Cobalt Mechanic's Length Drill Bits of 2025

CLE-LINE Cobalt Drill Bit, the Mechanics Length Drill, is a top choice for portable drilling due to its superior rigidity. The straw finish adds durability, while being made in the USA ensures quality. With package dimensions of 6" L x 6" W x 6" H, this drill bit is convenient to store and transport. Its rigidity provides stability during drilling, making it efficient for various projects. The straw finish enhances longevity, giving you a reliable tool. Being made in the USA guarantees high standards, and the compact packaging makes it easy to manage.

The Generic Cobalt Drill Bit is designed for precision and durability. With a cutting diameter of .1299 inches, it allows you to create clean and accurate holes in various materials. The cobalt construction increases its strength and longevity, making it ideal for tough jobs. Its 2-3/4 inch overall length provides a good balance for maneuverability while still reaching deeper areas. Additionally, the 135-degree split point design helps reduce walking, ensuring that you start drilling precisely where you intend. This drill bit is a reliable choice for both professionals and DIY enthusiasts alike.

Irwin Cobalt Drill Bit is a mechanic's length drill bit made by Hanson. It is size 19/64 with a twist and length of 3-1/16 inches. The overall length of the bit is 4-3/8 inches. The cobalt material makes it more durable and resistant to heat. The 135-degree left-handed design allows for easier drilling in tight spaces. The mechanic's length makes it ideal for use in compact spaces where longer bits can't fit. With Irwin Cobalt Drill Bit, you can easily drill through tough materials like stainless steel, cast iron, and titanium, and it is perfect for automotive and industrial applications.

The Dormo Left Hand Drill Bit is designed for precision and efficiency in mechanical tasks. With a size of 7/32 inches, it offers the right fit for various drilling needs. Its unique twist design enhances cutting performance, making it ideal for penetrating tough materials. Measuring 2-1/2 inches in length, it provides excellent reach for deeper drilling applications. Additionally, the overall length of 3-3/4 inches ensures you have enough tool length for better control and ease of use. This drill bit is a reliable choice for anyone looking to tackle challenging projects with confidence.

Introducing the Wedevag Cobalt Helical Drill, a mechanic's length drill bit suitable for both professionals and DIY enthusiasts. This drill bit features cobalt construction, which guarantees high durability and resistance to heat. The 1/8" cutting diameter and 1/8" shank diameter make it compatible with a wide range of materials, while the 2-5/32" overall length ensures precise and accurate drilling. The 2 flute design allows for faster and smoother drilling, which saves you time and effort. Whether you're working on a woodworking project or need to drill holes for metal fabrication, the Wedevag Cobalt Helical Drill is a reliable and efficient tool that can help you achieve your goals.

Drillco Mechanics Bits Set is a versatile set of high-speed steel drill bits designed for general purpose applications. The gold oxide finish enhances wear resistance, and the round shank with flats reduces slippage in drill chucks. The spiral flute design helps chips evacuate smoothly for reduced clogging. With sizes ranging from 1/16" to 1/2", these bits offer a good combination of hardness and toughness for various drilling tasks.

The Cobalt Left Hand Drill Bit from 212 Main is designed for tough drilling tasks. Made from M-42 cobalt high-speed steel, it offers exceptional resistance to abrasion, making it perfect for hard metals. The heavy-duty spiral flute design enhances chip removal, which speeds up your work. With shorter cutting lips, you can drill into high tensile strength materials with less torque, reducing strain on your tools. Additionally, the 135-degree split point allows for easier penetration, minimizing feed pressure and preventing work hardening. This drill bit is particularly useful when working with screw extractors.

kwb Cobalt Drill Bit is a high-quality tool designed for precise drilling in tough materials. With its special point geometry, it ensures excellent dimensional accuracy, making it ideal for challenging projects. Crafted from durable HSS and 5% cobalt alloy, this drill bit offers heat resistance and reduced wear, guaranteeing long-lasting performance. Complying with DIN 338 standards, it provides outstanding borehole precision, suitable for alloyed and unalloyed steel, stainless steel, cast iron, bronze, and plastics. This industry-quality drill bit, with a 135° split point and self-centering feature, is a versatile and reliable choice for your drilling needs.

The uxcell Twist Drill Bit is a reliable tool designed for precision drilling. With a total length of 130mm and a shank diameter of 10mm, it fits well in various drill types, providing stability during use. The M35 HSS cobalt material ensures durability and resistance to wear, making it ideal for tough materials. Additionally, the flute length of 80mm allows for efficient chip removal, ensuring smoother drilling operations. Weighing only 55g, this drill bit is easy to handle, offering convenience during extended use.

The RedLine Tools Drill Bit features a 135° point angle that ensures precise drilling, making it easier for you to create clean holes. With a cutting diameter of .1875 inches, this bit is perfect for various applications, providing excellent control and accuracy. The 3/16 round shank diameter allows for compatibility with standard drill chucks, giving you flexibility during use. Additionally, this pack of 12 bits is made from high-quality American cobalt, ensuring durability and longevity, so you can tackle your projects with confidence.