pMorse End Mill, Center Cutting Long Length Single End, Series 4551, 1332 in Cutter Dia, 334 in Overall Length, 134 in Maximum Depth of Cut, 4 Flutes, Spiral Flute, 12 in Shank Dia, Right Hand Cutting, 30 deg Helix Angle, RoundWeldon Flat Shank, HSS, Brightp.