pMorse Single End Mill, Ball Nose Center Cutting Miniature Regular Length, Series 5919E, 0055 in Cutter Dia, 112 in Overall Length, 0165 in Maximum Depth of Cut, 4 Flutes, Helix Flute, 18 in Shank Dia, 30 deg Helix Angle, Micrograin Solid Carbide, DLC Coatedp