pMorse End Mill, Center Cutting Regular Length Single End, Series 1897M, 16 mm Cutter Dia, 334 in Overall Length, 158 in Maximum Depth of Cut, 4 Flutes, Spiral Flute, 58 in Shank Dia, Right Hand Cutting, 30 deg Helix Angle, RoundWeldon Flat Shank, HSS, Brightp.