pMorse End Mill, Center Cutting Regular Length Single End, Series 4550G, 1316 in Cutter Dia, 418 in Overall Length, 178 in Maximum Depth of Cut, 4 Flutes, Spiral Flute, 34 in Shank Dia, Right Hand Cutting, 30 deg Helix Angle, RoundWeldon Flat Shank, HSS, TiN Coatedp.