pMorse Roughing End Mill, Center Cutting Regular Length, Series 4613G, 78 in Cutter Dia, 418 in Overall Length, 178 in Maximum Depth of Cut, 5 Flutes, Fine Pitch Flute, 34 in Shank Dia, Right Hand Cutting, 30 deg Helix Angle, RoundWeldon Flat Shank, Cobalt 8M42 HSS, TiN Coatedp.