The Toolex HSS-E Piloted Counterbore with a 180° cutting edge is a precision tool for creating accurate, flat-bottom counterbores. Ideal for machinists and fabricators who need clean recesses for flush-fit fasteners across a range of materials.

• Material: HSS‑E (high‑speed steel with cobalt) boosts strength, heat resistance, and wear life for demanding counterboring tasks.
• Cutting Edge: 180° geometry delivers a true flat bottom, enabling consistent depth and smooth, even recess surfaces.
• Piloted Design: Built‑in pilot guides the tool for precise alignment, reducing wandering and improving repeatability on every hole.
• Size: Metric M10 configuration to fit standard counterbore setups and tooling systems used in metalworking shops.
• Material Range: Performs well in steel, aluminum, and other common metals, as well as certain plastics where precise recesses are needed.

With its cobalt-enhanced HSS, this counterbore stays sharp longer and handles higher cutting speeds and temperatures typical in metalworking. The piloted approach minimizes misalignment, so depth control remains consistent across multiple workpieces. Whether you’re mounting socket-head screws, finishing cover plates, or building precise panels, this tool helps you achieve flush, clean recesses with repeatable results and reduced rework.