The Somta Extra Long Series Drill - HSS-E Parabolic Flute, 10mm x 430mm is crafted for serious deep-hole work where reach and reliability matter. Designed to cut cleanly into thick workpieces, this drill bit delivers precise holes with consistent diameter from start to finish, even when the material is tough or dense.

Key features that set this drill apart:

• Long-reach geometry: At 430mm in length with a 10mm diameter, it easily reaches deep into multi‑inch-thick plates, blocks, or intricate assemblies without compromising alignment.
• HSS-E construction: High-speed steel with enhanced alloying delivers superior heat resistance, greater wear protection, and longer tool life under demanding drilling conditions.
• Parabolic flute design: Optimized for aggressive chip evacuation in deep holes, the parabolic flute minimizes clogging, reduces friction, and helps maintain a smooth, steady cutting action from entry to exit.
• Sharp cutting edges: Precision-ground edges produce clean, true holes with minimal burrs, improving downstream assembly and component fit.
• Stable performance in metalworking applications: Ideal for through-holes and deep-hole tasks in ferrous and non-ferrous metals, helping you complete complex projects with fewer tool changes.

Who benefits most from this drill bit? machinists, fabricators, and workshop professionals tackling thick workpieces, automotive or aerospace components, mold and tooling manufacturing, and any project that requires reliable deep-hole drilling without frequent tool swaps. If you’ve reached the limits of standard-length bits, the Somta Extra Long Series Drill gives you the reach and consistency to finish the job efficiently.

Practical tips for best results:

• Use a firm workholding setup and a pilot hole when appropriate to keep the bit on center, especially in hard metals.
• Employ peck drilling cycles to clear chips and prevent heat buildup; pause to evacuate chips before continuing deeper into the workpiece.
• Apply cutting fluid or coolant to extend tool life, improve chip evacuation, and reduce friction in long holes.
• Maintain steady, moderate feed rates and avoid aggressive plunging to minimize deflection and ensure round, true holes.

With the Somta Extra Long Series Drill, you’re equipping your workshop with a purpose-built solution for precision deep-hole drilling. The combination of a long reach, tough HSS-E alloy, and a parabolic flute that promotes efficient chip evacuation translates into fewer reworks, tighter tolerances, and a more dependable drilling process from start to finish.