Europa Tools Long Series Drill - HSS CO8 - Straw Coated - 3.9mm

The Europa Tools Long Series Drill is engineered for serious metalworking where depth, precision, and endurance matter. Crafted from HSS CO8 (8% cobalt) and finished with a straw-coated layer, this drill bit is built to perform at higher temperatures and under demanding cutting conditions without losing its edge.

Long reach, dependable performance

Designed with an extended flute length, this drill delivers exceptional reach for deep holes in panels, frames, brackets, and fixtures. The long series geometry helps maintain stability and straightness, so you can drill clean, accurate holes without repositioning your workpiece.

Materials and finish that stand up to the task

HSS CO8 combines hard, heat-resistant cobalt with high-speed steel to resist edge wear and heat buildup during aggressive drilling. The straw-coated finish reduces friction and helps dissipate heat, extending tool life and reducing the chance of galling or chipped edges during repetitive cycles.

Precise 3.9 mm hole with versatile use

The 3.9 mm diameter hits a common sweet spot for engineering tasks—from mounting holes in enclosures to precision drilling in aluminum, steel, and other alloys. This bit is a reliable workhorse for fabrication shops, maintenance bays, and advanced hobby setups.

Why professionals choose this drill

Beyond raw material strength, the long flute design optimizes chip evacuation and minimizes clogging, especially in thicker materials or multi-pass drilling. The combination of 8% cobalt and straw coating means you can push to higher speeds and feeds with confidence, achieving smoother entry, straighter holes, and less motherboard-like heat buildup compared with standard HSS bits.

Practical use cases

• Deep-hole drilling in metal workpieces such as steel frames, aluminum brackets, and chassis components
• Hole enlargement or precise pilot-hole work in fabrication and assembly
• Projects requiring consistent hole quality across multiple passes or layers

Tips for best results

Pair with appropriate cutting fluid or oil to maximize heat management, start with a light pilot hole for accuracy, and maintain a steady drilling rate to preserve edge life. Use a slow-to-moderate spindle speed for tougher metals and increase feed pressure gradually for optimal efficiency.