Corner Radius End Mill: 3/16" Dia, 9/16" LOC, 0.01" Radius, 3 Flutes, Solid Carbide 2-1/2" OAL, 3/16" Shank Dia, 45 ° Helix, Zplus Coated, Single End, Centercutting, Series End Mills for Aluminum - 3 Flute - Corner Radius - 450 Helix - Chipbreaker Rougher