Dormer Pramet A125 7.00 mm x 250 mm HSS ST STRAIGHT SHANK EXTRA LONG SERIES DRILL BS 328

Meet the Dormer Pramet A125 7.00 mm x 250 mm HSS straight shank extra long series drill BS 328 — a purpose-built tool for deep-hole metalworking that demands both reach and reliability. Designed for demanding industrial and workshop environments, this drill bit pairs a robust cutting geometry with a long flute length to conquer holes that standard bits simply can’t reach.

Key features that enhance every cut

• 118-degree conventional point delivers a strong, self-centering bite and remains easy to re-sharpen when needed, reducing downtime on busy benches.
• Steam oxide finish minimizes material adhesion to the cutting edge, helping chips clear smoothly and extending tool life in tougher metals.
• Extra-long length (250 mm) provides extended reach for drilling very deep holes or accessing recessed areas where shorter bits struggle to reach.
• Premium HSS material is versatile enough for drilling a wide range of metals, including steel, aluminium, and stainless steel, making it a go-to choice for mixed-material projects.
• Straight shank design ensures compatibility with a broad spectrum of machines — from drilling presses and milling machines to CNC setups — with solid clamping and minimal runout.

Why this drill makes a difference

In metal fabrication, maintenance, and repair work, you’ll frequently encounter deep, hard-to-reach bores. The A125’s extra-long geometry means fewer tool changes and less setup time, letting you complete projects faster without compromising accuracy. The 118° point geometry reduces walking on entry, enabling clean starts in a variety of materials, while the steam oxide coating keeps the cutting edge cooler and clearer of built-up material.

Ideal use cases

Perfect for drilling deep holes in steel, aluminium, and stainless steel where standard bits fall short. Use this drill in drill presses, milling machines, or CNC rigs that require a long reach without sacrificing tolerance. It’s especially well-suited for automotive fabrication, equipment maintenance, and fabrication shops that routinely tackle thick workpieces or assemblies with recessed cavities.

Practical tips for best results

• Pair the drill with appropriate lubrication and conservative feeds to maximize tool life, especially when penetrating harder metals.
• Maintain a steady cutting speed aligned with the material being drilled — slower speeds for steel, balanced speeds for aluminium to prevent workpiece galling or excessive heat.
• Use intermittent cuts and retract to clear chips during deep-hole drilling, helping to sustain cutting efficiency across the full 250 mm length.

When you need dependable reach without compromising performance, the Dormer Pramet A125 7.00 mm x 250 mm HSS straight shank extra long drill delivers precise starts, sturdy cutting action, and versatile metal compatibility — a true workhorse for serious drilling tasks.