The Europa Tools HSS-E End Mill is a 4mm ball nose cutter built for precise 3D contours, curved surfaces, and detailed finishing in CNC milling. Designed for professionals and serious hobbyists alike, it delivers dependable performance in demanding machining tasks. Diameter: 4 mm Flutes: 2-flute design for efficient material removal and chip clearance Geometry: Ball Nose end profile for smooth radii, contours, and 3D work Shank: Flatted Shank for stable clamping and reduced tool vibration Material: HSS-E (Cobalt high-speed steel) for enhanced heat resistance and wear protection Coating: Uncoated surface finish to improve chip flow and reduce friction Applications: Optimized for curved surfaces, contours, and complex 3D profiles in CNC milling With its uncoated surface and optimized flute geometry, this end mill delivers efficient chip evacuation and consistent cutting performance through challenging passes. The ball nose geometry enables accurate, smooth transitions on curved features, while the flatted shank provides secure, vibration-resistant clamping during longer or more demanding milling sessions. Built from HSS-E, it combines durability with reliable heat and wear resistance, helping you maintain a high-quality surface finish across a range of materials.