Meet the Somta Extra Long Series Drill - HSS-E Parabolic Flute, a purpose-built tool designed for deep hole drilling with unmatched reach and precision. With a generous 350 mm overall length and a 6.5 mm diameter, this drill bit is engineered to access deep cavities and long-through holes that standard drills struggle to reach, delivering consistent, true holes from start to finish.

Built from HSS-E (High-Speed Steel-E), this drill combines exceptional durability with impressive heat resistance. The material choice ensures reliable performance across demanding deep-hole applications, helping to extend tool life even when drilling through tougher metals. Whether you’re fabricating, repairing, or maintaining machinery, this drill is up to the task.

The standout parabolic flute design optimizes chip evacuation, reducing the risk of clogging and binding as you drill deeper. This means fewer interruptions, smooth cutting action, and a steadier path for accurate hole placement. The flute geometry also minimizes friction and heat buildup, preserving edge sharpness and improving longevity during extended drilling sessions.

With sharp cutting edges tailored for clean, accurate holes, this drill delivers precise starts and reduces deflection, even in challenging workpieces. The combination of extended reach, robust construction, and efficient chip removal makes it an indispensable choice for anyone tackling deep-hole drilling in metalworking or fabrication environments.

Key benefits at a glance:

• Diameter: 6.5 mm; Length: 350 mm (extra-long reach) for deep-hole work
• HSS-E construction for durability and heat resistance
• Parabolic flute optimizes chip evacuation and minimizes clogging
• Sharp cutting edges for clean, accurate holes
• Flute geometry reduces friction and heat buildup during drilling

Practical use guidance: select a sensible feed rate to maintain a steady cut, use appropriate lubrication or coolant as needed, and consider peck drilling to periodically break long chip loads when drilling deep holes. Secure the workpiece firmly and use a drill guide if straightness is critical. Regular inspection and maintenance of the cutting edges will help sustain performance across many drilling applications.