pMorse End Mill, Center Cutting Extra Long Length High Helix Single End, Series 1922, 58 in Cutter Dia, 618 in Overall Length, 4 in Maximum Depth of Cut, 2 Flutes, Spiral Flute, 58 in Shank Dia, Right Hand Cutting, 37 deg Helix Angle, RoundWeldon Flat Shank, HSS, Brightp.