VALYRIANTOOL 3PCS 17-32 Inch Cobalt Drill Bits – M35 HSSCO, 1/2-Inch Reduced Shank, 6-Inch OAL, 135-Degree Split Point

Overview

Meet the VALYRIANTOOL 3PCS cobalt drill bit set, engineered for metalworking tasks that demand a blend of hardness, toughness, and dependable cutting performance. Built with M35 HSSCO cobalt steel, these bits are designed to stand up to demanding materials while delivering steady, accurate progress through metals such as stainless steel, cast iron, copper, and zinc alloys. The result is a tool that feels confident in your hands and performs consistently across projects.

The standout finish combines a black and gold polished surface with micro features that improve lubricity. This subtle texture helps keep heat in check and puts coolant closer to the cutting edge, which can contribute to smoother bites and longer edge life in real-world work environments.

Key design details

• 135-degree split point for quick centering and reduced wandering at start
• Round shanks across the set for broad compatibility with common toolholding systems
• 1/2-inch reduced shank enhances versatility and fits a wide range of chucks

Spiral flutes play a practical role in chip evacuation. When used with standard right-hand rotation, the design helps carry chips away from the cutting edge, which can reduce clogging and maintain smoother drilling through tougher materials. The balance of geometry and coating is aimed at delivering controlled drilling experiences, rather than promising guaranteed outcomes, across everyday metalworking tasks.

Real-world uses

• Fabrication projects involving stainless steel, cast iron, or copper components
• Maintenance work on machinery parts where durable, repeatable cuts matter
• DIY metalworking and hobbyist projects that require reliable penetration and edge life

What you gain

• Three cobalt bits ready for general-purpose to more demanding drilling tasks
• Durable construction paired with a surface finish that supports smoother, cooler drilling
• Compatibility across a variety of toolholding systems thanks to a robust shank design

In practice, these bits offer a balanced combination of reliability and versatility. They’re suited for metal projects where precision, longevity, and a manageable cutting experience matter. Use them as a dependable option in a busy shop, a reliable choice for frequent metal drilling, or as a solid upgrade when working with mixed metals.