Seco Niagara Cutter 03115989 Elite SCS638R High Performance Medium Length Multi-Flute Single End End Mill, 3/4 in Dia Cutter, 0.12 in Corner Radius, 2-1/2 in Length of Cut, 6 Flutes, 3/4 in Dia Shank, 5 in OAL, AlTiN Coated