The Dormer Pramet A125 3/8 Inch x 460 mm HSS Straight Shank Extra Long Drill is built for serious depth and reliability. This long-reach drill blends precise geometry with rugged materials, delivering consistent performance when conventional-length bits fall short. Designed for professional fabrication, maintenance, and assembly environments, it handles demanding deep-hole tasks with confidence. Key features that matter when you’re drilling into thick or hard-to-reach workpieces: - 3/8 inch diameter with a 460 mm overall length and a straight shank, optimized for machinists who need reach without compromising rigidity. - 118-degree conventional point for fast, clean starts and less wandering, even when entering tough materials. The point is easy to re-grind, extending tool life on challenging jobs. - Steam oxide finish reduces friction and helps prevent workpiece material from sticking to the cutting edge, promoting smoother cuts and easier chip evacuation. - Extra Long Series purpose-built for deep holes and long-reach applications, so you don’t have to switch to specialty drills mid-project. - Premium HSS (High-Speed Steel) construction supports drilling across a wide material spectrum, including steel, aluminum, and stainless steel, with dependable heat resistance and wear performance. - Versatility across machines and setups: ideal for drilling in vertical and horizontal mills, drill presses, and CNC setups where long, straight bits are essential. Who benefits most - Machinists and fabricators who routinely encounter deep cavities, through-holes, or extended bore requirements. - Shops needing reliable long-reach drills for automotive, construction, and general steel fabricating, where standard-length tools can’t reach the target zone. - Maintenance teams performing heavy-gabrication repairs that require penetrating tough metals without swapping tool families. Practical guidance and best-use practices - Use a properly rigid setup and appropriate feeds to maximize flute life and minimize deflection on deep bores. - Apply light to moderate cutting fluid to manage heat buildup, especially when drilling stainless steel or through-thick sections. - For aluminum or softer alloys, start at a slower RPM and increase gradually to avoid built-up edge and chatter. - Regularly inspect the cutting edge; re-sharpen when needed to preserve hole quality and extend tool life. - Pair with compatible drill presses or CNC machines that can exploit the bit’s extended reach without overextending the spindle. With the Dormer Pramet A125, you gain a purpose-built, long-reach solution that maintains drilling accuracy, reduces setup changes, and delivers dependable performance across common metalworking materials. It’s the go-to choice when the job demands depth, precision, and a single tool you can rely on for extended bore work.