Meet the Dormer Pramet A978 8.50 mm HSS-E High Performance Multi-Application Straight Shank Extra Long Drill (DIN 1869). Designed for demanding metalworking tasks, this drill combines precision, reach, and reliability in a single tool you can trust for deep-hole work.

• 130-degree point for self-centering accuracy and reduced push force, helping you start holes cleanly and maintain control through the cut.
• Bright finish minimizes material sticking to the cutting edge, promoting smoother drilling and easier chip evacuation.
• Parabolic flute design engineered to drill very deep holes in a single pass, reducing tool changes and increasing throughput on long-length projects.
• Premium HSS-E material delivers robust performance across a range of metals—including steel, aluminum, and stainless steel—while offering improved heat resistance during extended drilling cycles.
• Extra long length series optimized for applications demanding significant reach, such as deep-pocket drilling, through-holes in thick sections, or workpieces with limited access.
• Straight shank compatibility with a wide variety of chucks and holders, ensuring solid alignment and minimal runout in demanding setups.
• DIN 1869 compliance ensures consistent dimensions and interchangeability with standard toolholding systems for reliable performance across machines.

This drill is ideal for professionals who routinely face deep-hole challenges or need extended reach without sacrificing hole quality. Use cases include long through-holes in steel frames, deep-pocket machining in aluminum components, and precision drilling in stainless assemblies where accuracy and consistency matter. The A978’s combination of a precise point, durable HSS-E construction, and the ability to drill deep in a single pass helps you reduce setup time, improve throughput, and minimize tool changes.

Compared to standard short drills, the A978 elevates performance where access is limited and hole depth is critical. The 130-degree point and parabolic flute work together to maintain cutting efficiency as the hole length increases, while the bright finish and robust HSS-E composition help sustain tool life in tough materials. For best results, use appropriate lubrication, steady feeds, and secure clamping to maximize hole quality and drill life.