Dormer Pramet R459 3.90 mm CARBIDE TIALN FORCE-X STEPPED SHANK LONG SERIES (X8D) DRILL

The Dormer Pramet R459 3.90 mm carbide TiAlN Force-X stepped shank long series drill (X8D) is a high‑performance tool built for precise hole‑making in steel, aluminium, and stainless steel. The stepped shank and long series design deliver secure chuck grip and stable drilling, helping you maintain accuracy and achieve clean holes with H9 tolerance, even at higher speeds.

Key to its performance is a 140° four‑facet split point that self‑centers the drill and reduces the push force required to start a hole. A Titanium Aluminium Nitride (TiAlN) coating provides a tougher wear surface and better heat resistance, extending tool life when drilling harder materials. The CTW flute design with coolant feed increases tool strength, supports higher cutting speeds and feeds, and improves chip evacuation for smoother drilling.

• 140° four‑facet split point: Self‑centering start reduces wandering and lowers the push force, helping you begin holes cleanly and consistently.
• TiAlN coating for longer life: Hardened surface resists wear and heat, boosting durability when drilling steels, stainless steels, and aluminium alloys.
• CTW flute design with coolant feed: Stronger flute geometry and coolant delivery enable higher speeds and feeds, better chip control, and reliable hole quality.

This drill helps you work more efficiently by delivering fast, clean holes with consistent tolerances, reducing rework and downtime. The durable carbide, TiAlN coating, and optimized point and flute geometry provide reliable performance across common metals, giving you a dependable tool you can trust for daily use in workshops, fabrication shops, or field projects.