Take on demanding deep-hole tasks with the Dormer Pramet A977 3.00 mm HSS-E High Performance Multi‑App Straight Shank Extra Long Series drill. Built for precision, reach, and versatility, this drill is designed to handle a variety of materials and challenging bores with confidence.

• 130° point for self-centering — minimizes wandering and reduces the push force required to start and maintain a perfect hole alignment, giving you cleaner starts and more predictable results.
• Bright finish — helps prevent workpiece material from sticking to the cutting edge, promoting smoother entry and easier chip control during long drilling sessions.
• Parabolic flute design for extra-deep holes — optimized to evacuate chips efficiently in deep-hole applications, enabling drilling of deep bores in a single pass and reducing the risk of clogging or breakthrough chatter.
• Premium HSS‑E material — cobalt-based high-speed steel delivers improved hardness and wear resistance, making the drill suitable for drilling a wide range of materials including steel, aluminium, and stainless steel.
• Extra-long length, straight shank, DIN 1869/2 — specifically engineered for reach where standard drills can’t reach, ideal for long cavities, engine blocks, and deep pockets while maintaining straightness and rigidity.

This drill is best suited for workshops and production environments that demand reliable long-reach performance without frequent tool changes. Its multi‑application capability makes it a go-to choice for engineers and machinists tackling automotive components, machinery housings, and other assemblies that require precise, deep bore holes in a variety of metals.

Why choose the A977 for deep drilling? The combination of a 130° point, parabolic flute geometry, and a bright, wear‑resistant finish creates a drill that starts true, clears chips efficiently, and maintains hole accuracy even in demanding materials. The extra-long length provides the reach you need for complex assemblies, while the straight shank ensures compatibility with standard collets and chucks for steady, vibration‑free operation.

Practical tips for best results: - Use steady feeds and appropriate cutting fluid to optimize chip evacuation and extend tool life in deep bores. - Start with a small pilot hole if starting in very hard materials to improve center entry and reduce deflection. - Maintain proper workholding and secure clamping to reap the benefits of the drill’s rigidity and long reach. - Inspect the flute and edge after long runs; the parabolic design helps with continuous drilling, but consistent maintenance ensures consistent hole quality.