pMorse End Mill, Center Cutting Regular Length Single End, Series 5959, 4 mm Cutter Dia, 51 mm Overall Length, 14 mm Maximum Depth of Cut, 2 Flutes, 4 mm Shank Dia, Right Hand Cutting, 30 deg Helix Angle, PlainRound Shank, Solid Micrograin Carbide, Brightp.