Widin Carbide Corner Radius End Mill For Mold & Die - 2 Flute Long Neck - 4mm x40mm x R1Widin Carbide Corner Radius End Mill is a purpose built tool for mold and die work, offering precise corner radii with a compact 4 mm cutting diameter and a 40 mm overall length. The 2 flute design, 30 helix, and long neck combine to deliver smooth milling and reliable reach for intricate cavities. Cutting Diameter: 4 mm Overall Length: 40 mm Corner Radius: 1 mm (R1) Flute Count: 2 flutes Helix Angle: 30 Shank Neck: Long neck for extended reach and