pvariFLUTE End Mill, Center Cutting High Performance Regular Length Single End, Series 5998, 316 in Cutter Dia, 001 in Corner Radius, 2 in Overall Length, 916 in Maximum Depth of Cut, 7 Flutes, Variable Flute, 316 in Shank Dia, 45 deg Helix Angle, 10 Cobalt Micrograin Solid Carbide, nACo Coatedp.