Seco Niagara Cutter 17007049 Elite S545R Center Cutting High Performance Medium Length Single End End Mill, 5/8 in Dia Cutter, 0.045 in Corner Radius, 1-5/8 in Length of Cut, 5 Flutes, 5/8 in Dia Shank, 3-1/2 in OAL, AlTiN Coated