Somta Extra Long Series Drill - HSS-E Parabolic Flute - 7mm x 225mm

Somta Extra Long Series Drill – HSS-E Parabolic Flute, 7mm x 225mm is purpose-built for deep-hole drilling where reach, precision, and reliability matter. With its extended 225mm length, this drill bits into recessed features and thick workpieces without the need to switch tools, streamlining workflows in metal fabrication, automotive, and machinery maintenance.

The drill uses HSS-E (High-Speed Steel-E) construction, delivering solid durability and heat resistance under demanding drilling conditions. This means you can maintain cutting performance and consistent hole quality even as temperatures rise during deep-hole work, extending tool life where standard drills would wear quickly.

The parabolic flute design is engineered to move chips away from the cutting edge efficiently. By guiding chips up and out of deep holes, it minimizes clogging, reduces counterforce, and lowers the risk of drill binding. The result is smoother starts, cleaner entry, and holes that stay true to size as you drill deeper.

Key benefits you’ll feel in real-world use:

• Deep-hole reach—the extra-long length lets you access recessed pockets and deep cavities without repositioning the workpiece.
• Efficient chip evacuation—parabolic flute geometry keeps chips flowing away from the cutting edge, reducing heat buildup and prolonging tool life.
• Sharp, reliable cutting edges—precise hole starts and clean edges improve fit and finish in a variety of metals.
• Durable, heat-resistant performance—HSS-E construction stands up to extended drilling sessions, maintaining accuracy and reducing wear.
• Versatile application readiness—well-suited for steel, cast iron, and other common drilled materials where deep access is required.

Practical usage tips for best results:

• Pair with appropriate machine speed and a steady feed to minimize heat and maximize hole quality.
• Use a light lubrication or cutting fluid when drilling metals to further reduce friction and extend tool life.
• Chip evacuation is the driver of performance—avoid deep drilling in a single pass; back off slightly to clear chips if you notice resistance.
• Keep the drill perpendicular to the workpiece for true, straight holes, and avoid side pressures that could deflect the bit.

The Somta Extra Long Series Drill is the go-to choice when your projects demand extended reach without compromising hole precision or tool longevity. Whether you’re repairing a heavy machinery component, fabricating a deep-pocket enclosure, or tackling a challenging automotive part, this 7mm x 225mm HSS-E parabolic drill delivers dependable performance, one deep hole at a time.