Seco Niagara Cutter 17003418 Elite S335 Center Cutting High Performance Single End Stub Length End Mill, 7/16 in Dia Cutter, 0.02 in Corner Radius, 9/16 in Length of Cut, 3 Flutes, 7/16 in Dia Shank, 2-1/2 in OAL, AlTiN Coated