pMorse End Mill, Center Cutting Extra Long Length Single End, Series 5950, 516 in Cutter Dia, 4 in Overall Length, 158 in Maximum Depth of Cut, 2 Flutes, 516 in Shank Dia, Right Hand Cutting, 30 deg Helix Angle, PlainRound Shank, Solid Micrograin Carbide, Brightp.