Seco Niagara Cutter 17004141 Stabilizer HT STR440 Center Cutting Medium Length Single End End Mill, 1/2 in Dia Cutter, 0.03 in Corner Radius, 1-1/4 in Length of Cut, 4 Flutes, 1/2 in Dia Shank, 3 in OAL, AlCrN Coated