pMorse Roughing End Mill, Center Cutting Regular Length, Series 4640C, 34 in 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, Cobalt 8M42 HSS, TiCN Coatedp