Somta Extra Long Series Drill - HSS-E Parabolic Flute - 3mm x 200mm

Meet the Somta Extra Long Series Drill - HSS-E Parabolic Flute - 3mm x 200mm, a purpose-built tool for deep-hole drilling where reach, stability, and clean holes matter most. With a true 3 mm diameter and a generous 200 mm overall length, this drill is engineered to access tight cavities and thick workpieces without compromising hole quality or accuracy.

Why this drill stands out

• HSS-E construction: A cobalt-enhanced high-speed steel formulation delivers superior heat resistance and edge retention, so you can push deeper holes with less wear and longer tool life.
• Parabolic flute geometry: Optimized chip evacuation minimizes clogging and built-up edge, maintaining consistent cutting action even as you drill deeper into the workpiece.
• Extra-long reach, precise results: The extended flute length keeps cutting lines stable and reduces deflection, helping you achieve straight, true holes in challenging geometries.
• Sharp cutting edges: Each drill feature is honed to deliver clean, accurate holes with minimal rework, making post-processing faster and more reliable.
• Durability under demanding tasks: Designed for aggressive drilling environments, this bit resists dulling and maintains performance across materials commonly encountered in fabrication, automotive, and machine shops.

Ideal use cases

• Deep through-holes and long blind holes in steel, aluminum, stainless steel, and other metals where standard-length drills can’t reach.
• Automotive chassis fabrication, automotive repair, and assembly tasks that require extended reach without flipping the workpiece.
• Machining and prototyping where precise hole alignment is critical in thick components or assembled assemblies.
• Fixture and Jig work, mold making, and any application needing reliable deep-hole drilling with minimal chatter.

Practical tips for best results

• Use a compatible cutting fluid or coolant to optimize heat management and extend tool life during deep-hole drilling.
• Drill in short, controlled pecks to clear chips and prevent clogging; gradually feed forward to maintain hole diameter integrity.
• A light initial spot or pilot hole helps you start the hole accurately and reduces wandering on the first cut.
• Match your spindle speed to the material and diameter, and monitor temperature—excess heat is a sign to back off and clear chips.

Whether you’re tackling thick workpieces, confined spaces, or long, precise holes, the Somta Extra Long Series Drill - HSS-E Parabolic Flute - 3mm x 200mm delivers dependable performance, extended reach, and superior hole quality that professionals trust for repeatable results.