Somta Long Series Drill - HSS-E Parabolic Flute - 9mm

The Somta Long Series Drill — HSS-E Parabolic Flute, 9 mm, is a purpose-built solution for serious deep-hole work. Engineered for reliability in demanding metalworking environments, this long-length drill delivers precise, clean holes through thicker materials without frequent tool changes.

• Long-length utility for deep holes Designed to reach through thick workpieces with consistent accuracy, reducing the need to reposition or flip parts mid-drill.
• HSS-E construction An enhanced high-speed steel alloy that combines toughness with superior heat resistance, helping the bit maintain cutting performance under demanding speeds and feeds.
• Parabolic flute geometry Effective chip evacuation minimizes binding and motor load, lowers cutting forces, and keeps temperatures in check for extended tool life.
• Sharp cutting edges, clean results Precision-ground lips deliver true hole geometry and tight tolerances, with reduced burrs in steel, stainless steel, cast iron, and other common metals.
• Friction-reducing flute design The parabolic/flute profile minimizes contact friction during drilling, supporting steadier feeds, smoother starts, and less heat buildup.

Ideal for metal fabrication, maintenance workshops, and production environments where deep drilling is routine. The 9 mm diameter is perfect for creating robust pilot holes, through-holes for fasteners, or clearance holes in thick plates. The long-series design means fewer tool changes and more consistent hole quality across multiple workpieces.

Practical guidance for best results: pair the drill with appropriate backing and firm work-holding, start at a conservative speed and feed, then dial up as the cut stabilizes. Use cutting oil or coolant when drilling steels to maximize edge life, and routinely inspect the flute for wear to preserve performance over time. When stored properly, this Somta drill stays ready for the next deep-hole job with minimal rework.