Widin Carbide Corner Radius End Mill For Mold & Die - 4 Flutes Tapered Neck Type -4mm x 50mm x R0.2With its 4 flute configuration and tapered neck type, this end mill effectively reduces high strength and chattering, ensuring smoother cutting operations and improved surface finishes. The tapered effective length enhances rigidity and stability, making it suitable for deep groove machining tasks. This end mill comes in various specifications, allowing for flexibility in selecting the optimal effective length based on the specific requirements of