Corner Radius End Mill: 1" Dia, 1-1/4" LOC, 1/4" Radius, 3 Flutes, Solid Carbide 5" OAL, 1" Shank Dia, 40 ° Helix, Zplus Coated, Single End, Centercutting, Series End Mills for Aluminum - 3 Flute - Corner Radius - 400 Helix - Variable Pitch - Reduced Neck