pvariFLUTE Single End Mill, Center Cutting Extended Length, Series 5998, 58 in Cutter Dia, 312 in Overall Length, 114 in Maximum Depth of Cut, 7 Flutes, Variable Helix Flute, 58 in Shank Dia, 45 deg Helix Angle, 10 Cobalt Micrograin Solid Carbide, nACo Coatedp