Introducing the Somta Extra Long Series Drill - HSS-E Parabolic Flute - 10mm x 265mm, a purpose-built solution for deep-hole drilling with precision and reliability. This drill is engineered to reach into thick workpieces and hard-to-access pockets, delivering consistent performance where standard-length bits fall short.

The extra-long 265 mm overall length and 10 mm diameter give you the reach you need for through-holes, blind holes, or cavities in metal assemblies, automotive components, or industrial fabrications. The HSS-E (High-Speed Steel with cobalt enrichment) construction enhances heat resistance and wear life, letting you drill more holes between tool changes even in tougher materials like stainless steel and hard alloys.

The parabolic flute design is a standout feature, optimizing chip evacuation to prevent clogging and reducing heat buildup during drilling. That means steadier feeds, fewer interruptions to clear chips, and cleaner holes with less burr formation. Combined with sharp cutting edges and a geometry tuned for deep-hole work, this drill maintains straightness and dimensional accuracy throughout the operation.

Why this long drill stands out

• Extended reach for deep holes: maximizing accessibility in thick workpieces, assemblies, and components with limited setup access.
• Durable HSS-E construction: superior heat resistance and longer tool life under demanding drilling conditions.
• Efficient chip evacuation: parabolic flute geometry minimizes clogging and heat, enabling smoother, faster drilling.
• Precise hole quality: sharp cutting edges and optimized flute geometry deliver true hole diameters with minimal wandering.
• Broad compatibility: designed to work with standard drilling equipment—drill presses, milling machines, and compatible hand tools—with appropriate speed and feed adjustments.

Ideal for professionals and serious DIYers who regularly perform deep-hole drilling in steel, alloys, aluminum, and other metals, this Somta drill is a dependable choice for engine blocks, transmission housings, housings, brackets, and other components where depth and precision matter.

Practical tips for best results: use a light cutting fluid or coolant to minimize heat, maintain a steady feed to prevent deflection, and consider a pilot hole for extra guidance in tough materials. After drilling, deburr the hole edge to ensure smooth assembly and finish. With proper workholding and perpendicular alignment, the extra-long reach of this drill will consistently outperform standard bits on demanding projects.