The Dormer Pramet A125 10.00 mm x 250 mm HSS ST Straight Shank Extra Long Series Drill (BS 328) is engineered for serious deep-hole drilling without compromising on durability or accuracy. Built for professional workshops and fabrication floors, this drill delivers reliable performance where reach matters most.

• 118-degree conventional point for confident starts, reduced walking on initial contact, and clean hole entry that resists wandering even on harder metals. The geometry also lends itself to straightforward re-grinding when you need to refresh the edge instead of replacing the bit.
• Steam oxide finish minimizes built-up material at the cutting edge, promoting smoother chip flow and cleaner hole surfaces. This coating helps extend tool life by reducing friction and heat during aggressive drilling runs.
• Extra-long length (250 mm) is purpose-built for drilling very deep holes or accessing tight workpieces where standard drills can’t reach. Perfect for automotive fabrication, enclosure drilling, and long-through-hole tasks where reach is essential.
• Premium HSS material delivers dependable cutting performance across a range of substrates, including steel, aluminum, and stainless steel. The hard-wearing alloy resists wear under repeated use, helping you complete projects with fewer tool changes.
• Straight shank design ensures stable, universal compatibility with most drill chucks and machines, making it a versatile choice for both handheld drills and stationary drilling setups.
• BS 328 compliant—built to exacting standards so you can trust consistency, dimensional accuracy, and dependable performance in everyday metalworking tasks.

Designed for machinists, fabricators, and maintenance technicians who need precise deep-drilling capability without sacrificing speed or edge life, this drill bit handles a wide variety of materials with ease. Use it for long-hole drilling in steel components, fabrications with limited access, or any project where a standard drill just can’t reach the job. The A125 series stands out because it combines reach, toughness, and reliable starting performance in one proven tool.

Why choose this drill? Its combination of a robust 118° point, steam oxide finish, and extra-long geometry translates into fewer tool changes, cleaner holes, and more predictable results in challenging drilling scenarios. When you need a drill that can handle deep work without compromising on edge life or accuracy, the Dormer Pramet A125 delivers.