Dormer Pramet A125 3/32 Inch x 160 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328

When you need to reach deep into metal or other materials with dependable precision, the Dormer Pramet A125 3/32 Inch x 160 mm HSS ST Straight Shank Extra Long Series Drill is built to deliver. This drill bit combines long reach with robust construction to handle demanding drilling tasks in a single, reliable tool.

• 118° conventional point — a strong, self-centering tip that starts cleanly and can be easily re-ground to maintain sharpness, reducing wander and improving hole straightness over time.
• Steam oxide finish — reduces friction and helps prevent the workpiece material from sticking to the cutting edge, promoting smoother chip evacuation and longer edge life.
• Extra-long length (160 mm) — specifically engineered for drilling very deep holes and for applications where increased reach is essential, while preserving rigidity and precision.
• Premium HSS material — versatile performance across a range of materials, including steel, aluminium, and stainless steel, with good heat resistance and re-sharpenability for extended use.
• Straight shank (ST) — standard, universally compatible with most drill chucks and machines, providing stable grip and consistent hole quality.

Ideal for workshops and job sites where deep bores and narrow-diameter holes are common, this drill bit excels in fabrication, automotive components, and maintenance tasks. The 3/32" diameter offers precise pilot-hole capabilities without sacrificing durability, making it a reliable choice for creating clean, accurate holes in a variety of materials.

Why choose the A125 extra-long drill? It combines the ease of re-sharpening with the practical reach you need for hard-to-reach workpieces. The combination of a tough HSS core, a self-centering point, and a friction-reducing steam oxide finish translates to fewer bit changes, less downtime, and better hole accuracy on every job.

Pro tips for best results

• Use a steady drilling feed and moderate speeds; let the bit do the work without forcing it to prevent deflection.
• Keep cutting edges cool with appropriate cutting fluid when drilling steel or stainless steel to extend life and maintain edge geometry.
• Clamp the workpiece securely and ensure the bit is perpendicular to the surface to avoid off-axis holes.
• For deep holes, periodically retract the bit to clear chips and reduce heat buildup.