Meet the Toolex HSS-E Piloted Counterbore (180°) in Metric M2.5 — a precision tool designed for small-diameter counterbores with consistent, flat-bottom recesses. Built for machinists and fabricators who demand reliability, this counterbore delivers clean results and dependable alignment in a compact package.

• Size: M2.5
• Material: HSS‑E (high‑speed steel with cobalt) for enhanced strength, wear resistance, and heat tolerance
• Cutting geometry: 180° flat-bottom edge to produce precise, flush recesses
• Piloted design: ensures accurate alignment with the pre‑drilled hole for minimal wander
• Applications: suitable for a range of materials in metalworking and fabrication environments
• Compatibility: designed to work with standard drill chucks and setups

This counterbore helps you achieve repeatable, high‑quality bolt recesses, reducing the need for rework and ensuring a clean seating surface for fasteners. The HSS‑E composition withstands demanding cutting conditions, extending tool life even in tougher materials. With its piloted tip and 180° geometry, you get precise starts, stable performance, and consistently flat bottoms that ensure bolts sit flush every time.