QWORK 4-Piece Cobalt Countersink Chamfer Tool Set, M35 HSS, 90° Cutting Angle

Engineered for durability and precision

Meet the QWORK 4-Piece Cobalt Countersink Chamfer Tool Set. Built from M35 high-speed steel with a cobalt coating, these bits are designed to endure demanding drilling tasks. The cobalt finish enhances toughness, supports high-temperature resistance, and helps maintain sharp edges through busy shop days.

With a 90-degree cutting angle, these bits produce clean, consistent chamfers while promoting efficient chip ejection, which can contribute to smoother work and less clogging in dense materials.

What you get

• SAE sizes: 1/4"–3/4" (1/4, 3/8, 1/2, 3/4)
• Metric sizes: 2–5 mm, 5–10 mm, 10–15 mm, 15–20 mm

Key benefits and design notes

• M35 high-speed steel with cobalt coating for toughness and heat resistance
• Versatile compatibility with metal, stainless steel, copper, wood, and fiberboard
• Precise 90-degree angle for clean cuts and swift chip ejection
• Four sizes included in a comprehensive set, with portable cases for storage
• User-friendly design suited for machinists and DIY enthusiasts across drilling, milling, and impact tools

The kit's portability means you can move between machines or job sites without clutter. Whether you’re preparing screw recesses, refining edges on a metal panel, or shaping wooden components, the QWORK countersink set offers a practical option to explore finishes and fit tolerances.

Real-world use ideas: create flush screw heads on a metal panel, edge-profile wood furniture components, or prepare copper fittings with consistent chamfers. The design supports repeatable results without promising a guaranteed outcome, letting you assess the fit and finish that work best for your project.