Engineered for serious metalworking, the Dormer Pramet A110 18.50 mm HSS Straight Shank Long Series Drill (DIN 340) combines reach, precision, and durability in a single high-performance bit. Designed to tackle deeper holes without sacrificing cut quality, this drill is a reliable workhorse for professional workshops and demanding DIY projects alike.

Why this drill stands out

• 118-degree conventional point — establishes a strong, self-centering start that reduces wandering and produces cleaner hole entrances. The geometry is optimized for fast, decisive penetration, making it ideal for thicker materials where precision matters.
• Steam oxide finish — a slick, low-friction surface that minimizes built-up edge and helps prevent workpiece material from sticking to the cutting edge. This translates to smoother drilling and less downtime cleaning chips from the flute.
• Long series for deeper holes — purpose-built to reach into recesses, pockets, or thick workpieces where standard-length drills fall short. The extended flute length maintains rigidity while delivering reliable chip evacuation for sustained cutting performance.
• Premium HSS material — high-speed steel offers a versatile balance of toughness, heat resistance, and efficiency across a broad range of metals, including steel, aluminum, and stainless steel. This makes the A110 drill a practical choice for mixed-material jobs.
• Straight shank design — ensures broad compatibility with most drill chucks and collets, delivering a secure grip and true run-out control in handheld and machine setups alike.

Specifications at a glance

• Diameter: 18.50 mm
• Material: High-Speed Steel (HSS)
• Shank: Straight
• Series: Long length / DIN 340 standard
• Point geometry: 118-degree conventional
• Finish: Steam oxide

Ideal applications and use cases

• Fabrication and metalworking projects requiring deep holes in steel, aluminum, and stainless steel.
• Automotive components, brackets, and frames where through-holes or deep-pocket drilling is needed without multiple tool changes.
• Maintenance and repair tasks in workshops where a single bit must handle varied material thicknesses and densities.
• Prototyping or production setups that demand consistent hole quality across longer drilling cycles.

How this drill improves your workflow

The combination of a robust 18.50 mm diameter, a long flute length, and a durable HSS core translates to fewer tool changes and faster cycle times on the shop floor. The 118-degree point reduces setup time by minimizing the need for pilot holes, while the steam oxide finish lowers chip adhesion and stabilizes cutting temperatures. For operators, this means more predictable hole dimensions, better surface finishes, and less time spent fine-tuning feeds and speeds.

Practical tips for best results

• Use appropriate cutting speeds and feeds for the material at hand. Softer materials like aluminum typically benefit from higher speeds with steady downward pressure, while steels may require lower speeds and lighter feeds to control heat buildup.
• Keep the drill bit properly lubricated or cooled during extended drilling to maximize tool life and maintain edge sharpness.
• When drilling deep holes, periodically pause to clear chips and prevent chip packing, which can deflect the bit or trap heat.
• Inspect the point after heavy use and re-grind if necessary to restore the 118-degree geometry for continued accuracy.

Who benefits most

This drill is a strong fit for machinists, metal fabricators, maintenance technicians, and serious hobbyists who demand consistent performance from a single, reliable long-series drill. Its long reach and sturdy construction make it particularly well-suited for tasks that require depth without compromising hole quality or process efficiency.

Investing in the Dormer Pramet A110 18.50 mm HSS Straight Shank Long Series Drill (DIN 340) means choosing a tool that handles varied materials with confidence, reduces setup time, and delivers precise, repeatable results in both handheld and machine applications.