Corner Radius End Mill: 5/8" Dia, 3/4" LOC, 0.06" Radius, 3 Flutes, Solid Carbide 4" OAL, 5/8" Shank Dia, 40 ° Helix, Uncoated, Single End, Centercutting, Series End Mills for Aluminum - 3 Flute - Corner Radius - 400 Helix - Variable Pitch - Reduced Neck