Seco Niagara Cutter 17002172 Elite AN340 Center Cutting High Performance Single End Stub Length End Mill, 3/8 in Dia Cutter, 0.015 in Corner Radius, 1/2 in Length of Cut, 3 Flutes, 3/8 in Dia Shank, 2-1/2 in OAL, Uncoated