Somta Extra Long Series Drill - HSS-E Parabolic Flute - 12.5mm x 295mm

The Somta Extra Long Series Drill - HSS-E Parabolic Flute - 12.5mm x 295mm is engineered for deep hole drilling with uncompromising reach, precision, and durability. When your job demands access to extended interiors or thick workpieces, this long-reach drill delivers consistent performance from start to finish.

Designed for deep bore work, the extra-long 295mm length lets you drill where shorter bits simply can’t reach. The 12.5mm diameter provides a stable, true hole, reducing runout and improving accuracy in challenging assemblies or multi-pass operations. The HSS-E (High-Speed Steel-E) construction is built to endure demanding metalworking environments. This cobalt-enhanced alloy delivers superior durability and heat resistance, helping the bit hold its edge longer and resist premature wear when cutting through tougher materials or when drilling deeper holes that generate more heat. A key feature is the parabolic flute design, specifically engineered to optimize chip evacuation. Efficient removal of chips reduces clogging and minimizes heat buildup at the cutting edge, which translates to smoother drilling, less dwell time, and cleaner holes. Sharp cutting edges paired with the flute geometry work together to minimize friction and maintain steady, precise cutting action. This combination supports accurate hole dimensions and a finished bore quality that’s ready for threading, tapping, or component assembly. The Parabolic Flute (118 - 119 - 120) geometry is tailored for deep-hole performance, striking a balance between aggressive material removal and controlled heat management. That means improved hole quality, fewer interruptions for chip cleanup, and reliable tool life in long drilling cycles. Who is this ideal for? machinists, job shops, and engineers tackling internal or blind holes where depth is critical. It excels in metalworking tasks that require one tool to reach deep inside fixtures, housings, or mating components without sacrificing hole integrity or surface finish. How this drill helps you work smarter: - Extended reach means fewer tool changes and less downtime when accessing deep bores. - Consistent hole size and clean edge geometry reduce post-drilling finishing work. - Robust HSS-E design stands up to extended use and higher temperatures, increasing tool life. - Efficient chip evacuation minimizes heat and protects cutting edges during long drilling passes. Practical usage tips (to maximize performance in real-world jobs): secure the workpiece firmly, use steady feed pressure, and consider peck drilling to clear chips when drilling deeper bores. If you’re working in materials that generate more heat, apply a suitable cutting fluid and allow the drill to cool between longer passes to preserve edge life. For professionals who need one reliable drill to handle deep, precise holes with extended reach, the Somta Extra Long Series Drill - HSS-E Parabolic Flute - 12.5mm x 295mm stands out as a trusted, purpose-built solution.