pvariFLUTE End Mill, Center Cutting Extended Length High Performance Single End, Series 5999, 12 in Cutter Dia, 0015 in Corner Radius, 4 in Overall Length, 58 in Maximum Depth of Cut, 9 Flutes, Variable Flute, 12 in Shank Dia, 45 deg Helix Angle, 10 Cobalt Micrograin Solid Carbide, nACo Coatedp.