Designed for professional metalworking where reach and reliability matter, the Dormer Pramet A110 15.50 mm HSS ST Straight Shank Long Series Drill DIN 340 delivers depth without compromise. The 118° conventional point provides immediate bite and clean entry, while staying easy to re-sharpen for repeated use.

The steam-oxide finish delivers a built-in anti-adhesion layer, so workpiece material is less likely to weld to the cutting edge. That means smoother starts, reduced heat buildup, and longer tool life during demanding drilling tasks.

• Diameter 15.50 mm
• 118-degree point — strong, centering tip that resists wandering and reduces deflection on tough materials
• Long length series — extended flute length enables deeper holes and greater reach without sacrificing rigidity
• Premium HSS material — versatile for drilling a wide range of metals including steel, aluminium, and stainless steel
• Straight shank (DIN 340) — compatible with standard chucks and drill presses, ideal for both handheld and stationary machines
• Re-grindable edge — designed to be re-sharpened multiple times to extend service life

Who benefits most? Metalworkers, machinists, and maintenance technicians who routinely drill deep holes in metal assemblies—from chassis and frames to housings and brackets. If you need a drill that stays true through long jobs, resists built-up edge, and adapts to multiple machines, this is your go-to tool.

How this compares to alternatives? It combines a long-reach design with a sturdy HSS core and a re-sharpenable 118° point, delivering consistent hole quality across a broad material mix, all while the steam-oxide finish minimizes sticking that can ruin starts and cause chatter.

Practical tips for best results: - Use steady feeds and adequate lubrication to manage heat on harder materials. - Start at conservative speeds and increase as needed, especially when drilling stainless steel. - Clear chips regularly on deep holes to prevent chip packing and maintain cutting efficiency. - Inspect the cutting edge before and after heavy use and re-sharpen as soon as you notice dullness.