Dormer Pramet A125 3/8 Inch x 400 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328

Meet the Dormer Pramet A125 3/8 in x 400 mm HSS Straight Shank Extra Long Drill—a purpose-built tool designed for deep-hole work and demanding metal fabrication tasks. Built to deliver reliable starts, extended reach, and consistent performance in busy workshops, this drill is ready to tackle your toughest holes with precision.

Why this drill stands out

• 118-degree conventional point: delivers an immediate, self-centering bite that resists wandering. The geometry is straightforward to re-grind, enabling extended tool life between sharpenings.
• Steam oxide finish: a protective coating that minimizes material sticking to the cutting edge, promoting smoother entry and cleaner hole walls.
• Extra-long length (400 mm): unparalleled reach for drilling very deep holes or accessing recessed features without losing rigidity or control.
• Premium HSS material: dependable performance across a range of materials, including steel, aluminum, and stainless steel, with solid heat resistance for longer cuts.
• Straight shank design: compatibility with a wide variety of chucks and collets, delivering stable cuts and minimal runout on both drill presses and CNC machines.

This drill is engineered for professionals who routinely face deep-hole challenges—think fabrication shops, maintenance teams, automotive service, and metalworking enthusiasts. The combination of an aggressive point, extended reach, and robust HSS chemistry means fewer tool changes, more consistent hole quality, and predictable results across different projects.

Practical usage tips: maintain sharpness by re-grinding as needed, use appropriate coolant or cutting fluid to manage heat on tougher materials, and ensure your machine can accommodate a 3/8" straight-shank tool. Securely clamp the workpiece and apply a steady feed to maximize straightness and hole quality.