Meet the Dormer Pramet A977 1/4 Inch HSS-E High-Performance Multi-Application Straight Shank Extra Long Drill (DIN 1869/2). This is more than just a drill bit — it’s a purpose-built solution for precision holes in demanding materials, engineered for reach, reliability, and consistent results across a range of metals.

130° point for quicker, cleaner starts — The optimized point geometry guides the bit cleanly into the workpiece, promoting immediate alignment with the intended hole and lowering the required push force. The result is less wandering, faster setup, and tighter hole tolerances right from the first cut.

Bright finish minimizes sticking — A bright surface finish reduces adhesion between the workpiece and the cutting edge, helping to prevent chip welding and prolonging edge life when machining steel, stainless steel, and aluminum.

Parabolic flute design for deep-hole capability — The specially shaped parabolic flutes optimize chip removal and cooling, enabling deeper holes to be drilled in a single pass with steadier feeds and fewer interruptions, even in challenging workpieces.

Premium HSS-E material for versatility and durability — Constructed from high-speed steel with enhanced wear resistance, this drill is well-suited for drilling steel, aluminum, and stainless steel. It delivers reliable performance across multiple applications without frequent tool changes.

Extra-long length for increased reach — Designed for very deep holes and hard-to-reach workpieces, this extra-long series delivers the length you need for machining cavities, blind holes, and long through-holes while maintaining rigidity and cut quality.

• Diameter: 1/4 inch
• Material: HSS-E (premium high-speed steel)
• Shank: Straight
• Series: Extra long, multi-application
• DIN standard: 1869 / 2

Whether you’re fabricating, repairing, or performing maintenance on machinery, this drill is built to handle a variety of metals with consistent precision. Ideal for automotive, manufacturing, and workshop environments where deep, accurate holes are essential, it delivers dependable performance time after time. For best results, match drilling speeds and feeds to the material and use a stable, rigid setup to exploit the bit’s deep-hole capabilities.