The Dormer Pramet A977 12.00 mm HSS-E Extra Long Drill is engineered for professionals who need serious reach without sacrificing precision. Built to DIN 1869/2 specifications, this high-performance straight-shank drill delivers reliable alignment and deep drilling capability in a single pass, making it a go-to choice for heavy-duty metalworking jobs.

130° point for confident starts — The 130-degree drill tip is designed to self-center as you begin cutting, minimizing wandering and reducing the push force required to start a hole. That means cleaner starts and steadier progress, even when you’re working with tough metals or tight tolerances.

Parabolic flute design for deep-hole efficiency — This A977 drill features a parabolic flute geometry that clears chips effectively and supports drilling very deep holes in a single pass. The result is smoother operation, reduced heat buildup, and the ability to reach deep features without frequent re-positioning.

Bright finish and HSS‑E durability — The bright finish minimizes material adhesion at the cutting edge, helping maintain consistent geometry and prolonging service life. Made from premium HSS-E (often with cobalt content), it’s renowned for cutting performance across a range of materials, including steel, aluminum, and stainless steel. This combination of edge retention and versatility is ideal for mixed-material environments.

Extra-long reach for challenging setups — The A977 series is explicitly designed for drilling very deep holes and for applications where extended reach is essential. With a total length (OAL) around 375 mm and a flute length near 260 mm, this drill can access tight pockets, long through-holes, and deep cavities that standard drills can’t reach. It’s a true 20XD-class tool, optimized for depth without sacrificing stiffness or stability.

What you get with this drill — a 12.00 mm diameter, two-flute, straight-shank drill meeting DIN 1869/2 standards, crafted in HSS-E for broad material compatibility. It’s a dependable, single-tool solution for steel, aluminum, and stainless steel, suitable for cylinder blocks, chassis components, hydraulic housings, and other deep-hole applications where accuracy and reach matter. Whether you’re a job-shhopper or a production shop, this drill helps you reduce tool changes and improve cycle times without compromising hole quality.