Corner Radius End Mill: 3/4" Dia, 1" LOC, 1/4" Radius, 3 Flutes, Solid Carbide 6" OAL, 3/4" Shank Dia, 40 ° Helix, Zplus Coated, Single End, Centercutting, Series End Mills for Aluminum - 3 Flute - Corner Radius - 400 Helix - Variable Pitch - Reduced Neck