Dormer Pramet A125 1/8 Inch x 160 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328

When precision deep-hole drilling is non-negotiable, the Dormer Pramet A125 1/8" x 160 mm HSS straight shank drill delivers dependable performance you can trust. Built for reach without compromise, this extra-long drill bit extends your capacity in tight spaces and thick workpieces while maintaining clean, accurate holes.

• 118° conventional point provides a strong, self-centering starting edge that’s easy to re-sharpen, reducing walk and chatter during initial contact.
• Steam oxide finish minimizes material buildup on the cutting edge, promoting smoother entry and efficient chip evacuation for steadier drilling cycles.
• Extra-long length: 160 mm designed specifically for drilling very deep holes and accessing recessed areas where standard bits fall short.
• Premium HSS material supports reliable performance across a range of metals, including steel, aluminum, and stainless steel, with enhanced heat resistance and durability.
• ST straight shank ensures a secure grip in common drill chucks and collets, delivering consistent run-out and predictable hole location.
• 1/8" diameter offers precise control for small-hole work or as a pilot to guide larger-diameter operations.
• BS 328 specification situates this tool within the trusted Dormer Pramet extra-long series, built for professional workshop use.

This drill is ideal for machine shops, maintenance bays, and fabrication environments where depth and reach matter as much as cutting performance. Use it for deep pilot holes in automotive brackets, machinery housings, or thick components, then progress to larger diameters with confidence. Its versatility means it pairs well with standard drilling setups, making it a reliable choice for both routine deep-hole tasks and specialized fixtures.

Practical guidance to maximize results:

• Match speed and feed to material: steel responds to steady RPM with a deliberate feed, while aluminum benefits from a lighter touch to minimize built-up edge.
• Apply light cutting fluid to manage heat and extend tool life, especially when drilling stainless steel or high-carbon steels.
• Employ targeted pecking cycles to clear chips in deep holes, reducing friction and the risk of jamming.
• Secure the workpiece firmly and use a pilot hole to guide the bit at the start for improved accuracy and reduced wandering.