Meet the Somta Extra Long Series Drill - HSS-E Parabolic Flute, 16mm x 320mm: a precision-engineered solution built for deep hole operations where reach and reliability matter most. This drill is designed to cut cleanly through thick workpieces, delivering consistent hole geometry from start to finish while withstanding demanding metalworking environments.

Why this drill stands out for deep-hole work

• Extended reach for deep holes — the extra-long 320 mm overall length lets you reach into bulky components without repositioning the workpiece, reducing setup time and increasing drilling efficiency.
• HSS-E construction — High-Speed Steel Enhanced (HSS-E) provides superior hardness, heat resistance, and edge retention, translating to longer tool life and reliable performance under higher cutting temperatures.
• Parabolic flute design — optimized chip evacuation minimizes clogging and swarf buildup, enabling smoother drilling at depth and helping maintain a straight, true bore.
• Sharp cutting edges — precisely ground edges deliver clean, accurate holes with minimal wandering, even in tough or semi-soft metals.
• Efficient heat management — the flute geometry reduces friction and heat generation during deep drilling, helping to extend tool life and improve hole quality over longer engages.
• Stable performance at depth — the combination of parabolic flutes and robust core geometry minimizes deflection, so you get consistent hole diameter and straightness from entry to exit.

Ideal applications and use cases

• Deep-hole drilling in metal fabrication, automotive components, and hydraulic blocks where through-holes or blind holes require extended reach.
• Die and mold work, aerospace fittings, and custom fabrication projects that demand precise bore geometry at substantial depths.
• Maintenance and repair tasks involving thick castings or steel assemblies where standard-length drills fall short.

Tips for best results

• Use appropriate cutting fluid or coolant to manage heat buildup during long drill engagements.
• Start with a light touch and steady feed to prevent wandering; maintain alignment to preserve bore straightness.
• Monitor drill wear and replace when edge integrity declines to avoid burrs and incomplete holes.
• Keep the workpiece securely clamped to prevent vibration, especially when drilling at maximum depth.

Technical specifications at a glance

• Diameter: 16 mm
• Overall length: 320 mm
• Material: HSS-E (High-Speed Steel Enhanced)
• Flute type: Parabolic
• Designation: Somta Extra Long Series Drill

For shops that demand dependable, long-reach drilling with clean hole quality, the Somta Extra Long Series Drill - HSS-E Parabolic Flute provides the balance of reach, durability, and precision you need to complete deep-hole projects efficiently and with confidence.