Seco Niagara Cutter 03115965 Elite SCS638R High Performance Medium Length Multi-Flute Single End End Mill, 1/2 in Dia Cutter, 0.06 in Corner Radius, 1-5/8 in Length of Cut, 6 Flutes, 1/2 in Dia Shank, 4 in OAL, AlTiN Coated