Widin Carbide Corner Radius End Mill - 4 Flute Stub Cut Length - 1.5mm x 4mm x R0.3(4mm Shank)Widin Carbide Corner Radius End Mill is a precision micro milling tool designed for engineers and machinists working with hard materials. This 4flute stub cut end mill delivers reliable corners and smooth radii in tight spaces, made to handle demanding high hardness workpieces with consistent results. Diameter: 1. 5 mm Corner Radius: R0. 3 mm Cutting Length: 4 mm Shank Diameter: 4 mm Flute Count: 4 flute design for rigidity and efficient chip