Dormer Pramet A125 3/4 Inch x 460 mm HSS ST Straight Shank Extra Long Series Drill BS 328 is engineered for deep-hole drilling with precision and reliability. This 3/4" diameter drill bit combines a robust 118° conventional point, a steam oxide finish, and an exceptionally long reach to tackle thick materials and hard-to-reach holes with confidence.

Key features that matter in real-world work
- 118° conventional point: delivers a strong, self-centering start that resists wandering and reduces the need for constant alignment adjustments. The point is easy to re-sharpen, extending tool life between regrinds.
- Steam oxide finish: minimizes built-up edge and reduces friction at the cutting edge, helping maintain a clean hole without galling when drilling diverse metals.

Extra-long reach for demanding applications
With a 460 mm overall length, this drill is purpose-built for drilling deep holes, long through-holes, and applications where standard bits simply can’t reach. The straight shank ensures broad compatibility with a wide range of drilling machines, from benchtop setups to more capable drill presses and CNC platforms.

Premium HSS versatility
Made from high-speed steel (HSS), this bit handles steel, aluminium, and stainless steel with dependable performance. The combination of material strength and the A125 geometry provides steady cutting action, better heat resistance, and consistent hole quality across materials commonly encountered in fabrication, repair, and manufacturing environments.

Designed for professional results, every day
BS 328 specification means the drill aligns with standard industrial sizing and tooling practices, making it a reliable choice for shops that demand compatibility and repeatable results. Use with appropriate coolant and controlled feeds to maximize edge life and hole accuracy in demanding metalworking tasks.