Meet the Dormer Pramet A125 13/64 Inch x 200 mm HSS ST Straight Shank Extra Long Series Drill BS 328 — a purpose-built solution for deep-hole drilling that combines precision, reach, and durability in one robust tool. With a 13/64" diameter and a generous 200 mm length, this drill is designed to tackle long through-holes and deep pockets in a wide range of metals.

Why this drill stands out

• 118-degree conventional point delivers a strong starting bite and excellent self-centering, minimizing wandering and ensuring accurate hole starts. The point is designed to be re-ground, extending the tool’s life for demanding workshop use.
• Steam oxide finish reduces friction and prevents workpiece material from sticking to the cutting edge, promoting cleaner holes and easier chip evacuation during high-depth drilling.
• Extra long length series provides extended reach for drilling very deep holes or accessing recessed areas, all without compromising rigidity in typical drilling setups.
• Premium HSS material stands up to a variety of metals, including steel, aluminium, and stainless steel, making this drill a versatile workhorse in mixed-material projects.
• Straight shank offers broad compatibility with standard drill chucks and spindle interfaces, delivering reliable run-out and steady performance across machines.
• BS 328 compliant construction ensures you’re using a tool built to recognized standards, supporting consistent results across industrial and workshop environments.

Practical use and best-practice guidance

Ideal for automotive fabrication, equipment maintenance, and fabrication shop tasks where deep access is required. Use this drill in drill presses, CNC milling centers, or handheld setups equipped to handle long-reach HSS tools. When drilling steel, aluminium, or stainless steel, pair the drill with appropriate lubrication and sensible speeds to maximize edge life and hole quality. Its re-grindable point helps you extend tool life between replacements, keeping downtime to a minimum.

Who benefits most

This drill is perfect for machinists and fabricators who regularly perform deep-hole operations, technicians working in tight access areas, and shops that need a single, reliable tool capable of handling multiple metals with a long reach. If your work involves drilling deep pockets, through-holes in thick materials, or components where standard-length drills fall short, the Dormer Pramet A125 is designed to deliver consistent, high-quality results.