The Somta Extra Long Series Drill - HSS-E Parabolic Flute - 13.5mm x 380mm is purpose-built for serious deep-hole work. With extended reach and rugged construction, it powers through thick workpieces in a single, precise pass, reducing setup time and increasing accuracy on every job.

Key features that set this drill apart

• Extended reach for deep holes — at 380mm overall length, this drill reaches into heavy blocks, engine components, and long pockets where standard bits stall or require multiple setups.
• HSS-E construction — High-Speed Steel-E delivers exceptional wear resistance and heat tolerance, meaning longer tool life and reliable performance under demanding cutting conditions.
• Parabolic flute geometry — optimizes chip evacuation, minimizes chip clogging, and reduces heat buildup, which translates to cleaner holes and less tool fatigue.
• Sharp, precise cutting edges — designed to produce clean, accurate holes with reduced burrs, even in tougher metals.
• Efficient heat management — the flute profile lowers friction and helps maintain stable cutting temperatures, extending tool life and maintaining hole quality over time.
• Versatile compatibility — engineered for use with standard drill chucks and collets, offering dependable performance across a range of metalworking applications.

This drill is ideal for deep-hole drilling in ferrous and non-ferrous metals, including thick plates, castings, and components where access is limited. Whether you’re fabricating automotive housings, performing maintenance on heavy machinery, or working on mold and die applications, the Somta Extra Long Series Drill provides the reach and reliability you need to complete complex holes with confidence.

Practical guidance for best results

• Secure the workpiece firmly and mark a precise center to ensure straight, true entry.
• Use a peck drilling approach: drill a short depth, withdraw to clear chips, then continue. This helps prevent chip packing and clogging in long holes.
• Apply appropriate cutting fluid to reduce friction and heat, protecting both the drill and the workpiece.
• Maintain a steady, controlled feed and avoid excessive plunging force to preserve edge life and hole quality.
• Keep the flute clean from debris during operation to maintain consistent performance.

The image shows the Somta Extra Long Series Drill from multiple perspectives, illustrating its robust parabolic flute and generous length. This is a single, purpose-built tool designed to conquer deep-hole challenges with precision and durability.