pMorse End Mill, Center Cutting Long Length Single End, Series 4587, 38 in Cutter Dia, 314 in Overall Length, 112 in Maximum Depth of Cut, 4 Flutes, Spiral Flute, 38 in Shank Dia, Right Hand Cutting, 30 deg Helix Angle, RoundWeldon Flat Shank, Cobalt 8M42 HSS, Brightp.