Matework M35 Cobalt Countersink Drill Bit Set – 6-Piece, 1/4-inch Hex Quick Change

Premium durability for metal and wood projects

The Matework Countersink Drill Bit Set is designed for demanding work where metal meets wood. Constructed from M35 cobalt HSS and finished with a cobalt coating, these bits are built to resist heat buildup and corrosion, helping maintain sharpness and consistent results across sessions and projects.

With a convenient 1/4-inch quick-change hex shank, you can swap bits quickly in your drill, keeping your workflow smooth and uninterrupted. The set includes five popular sizes (1/4", 3/8", 1/2", 5/8", 3/4") plus a dedicated 5/16" option to cover more countersinking profiles without swapping tools mid-task.

Engineered for clean, repeatable countersinks

The five-flute geometry enhances stability during cutting and promotes efficient debris removal, which can help minimize chatter and deliver consistent countersink depth. Laser-engraved step sizes stay readable through heavy use, supporting quick, precise setup each time you start a project.

• Five-flute design delivers stable cutting and faster debris discharge for smoother drilling
• Cobalt-coated M35 HSS offers improved heat and corrosion resistance for tougher materials

Versatility is built in. These bits are suitable for stainless steel, carbon steel, iron, copper, aluminum, and wood, giving you the flexibility to handle multi-material tasks with a single set.

• Included sizes span from 1/4" to 3/4" with a 5/16" specialty option for broader coverage
• Laser-engraved sizes aid quick readability and precise countersinking in busy environments

In short, Matework focuses on dependable tooling that supports your process without overpromising results. Use this set as a practical option to speed up countersinking tasks and achieve clean finishes with confidence.

Should you encounter any quality issues, our dedicated support team is available via Amazon for guidance and replacements.