Meet the Dormer Pramet A125 8.00 mm x 400 mm HSS ST Straight Shank Extra Long Series Drill BS 328 — a purpose-built solution for deep-hole precision and dependable metalworking performance. This is the drill bit you reach for when reach and reliability matter as much as hole quality.

Key features that set this drill apart:

• 118° conventional point delivers a strong, self-centering start with minimal wandering. The geometry is designed for clean, true holes and it’s easy to re-grind when the edge dulls, extending tool life between sharpenings.
• Steam oxide finish reduces friction and helps stop workpiece material from sticking to the cutting edge, resulting in smoother drilling and less chip welding in challenging metals.
• Extra-long length (400 mm overall) provides remarkable reach for drilling very deep holes and accessing recessed or hard-to-reach areas without repositioning the workpiece or tooling setup.
• Premium HSS material handles a broad range of metals—from steel and aluminum to stainless steel—making this drill a versatile workhorse in mixed-material environments.
• Straight shank design pairs with a wide range of machines, including manual drill presses, CNC setups, and multi-axis rigs, ensuring secure clamping and consistent performance.
• BS 328 compatibility supports reliable interchangeability with standard tooling and fixtures, helping you maintain consistent hole geometry across the shop floor.
• Versatility across applications ideal for automotive fabrication, machine shops, and general engineering tasks where long-reach drilling is required.

Practical notes for best results: use steady feed pressure and proper lubrication to maximize edge life, especially when drilling stainless steel or other harder alloys. The extra length is perfect for long-hole fixtures, engine blocks, and extruded profiles where standard drill bits can’t reach.