The Vortex Carbide End Mill is a precision cutting tool designed for aluminum and non-ferrous alloys. Ideal for machinists and shops seeking clean, efficient milling with reliable rigidity, this 4mm 3-flute end mill combines a standard length and a 55° helix for smooth, accurate cuts. Diameter: 4 mm Flutes: 3-flute design for a balance of chip evacuation and rigidity Length: Standard length for versatile pocketing and profiling Edge geometry: Square cutting edge for precise engagement and predictable finishes Helix angle: 55° spiral to aid chip removal and reduce cutting forces Material: Solid carbide for wear resistance and long tool life Material compatibility: Optimized for aluminum and non-ferrous alloys In practice, this end mill delivers consistent, high-quality surfaces on aluminum and non-ferrous workpieces, even in tight tolerances. The 3-flute design reduces tool deflection while maintaining effective chip evacuation, helping you achieve smooth finishes with fewer passes. The 55° helix and square edge provide predictable cutting action that performs well on profiles, slots, and pockets, making it a reliable everyday tool in production or hobbyist setups.