Seco Niagara Cutter 02942331 MZN410R Center Cutting High Feed Single End Stub Length End Mill, 3/8 in Dia Cutter, 0.08 in Corner Radius, 0.08 in Length of Cut, 4 Flutes, 3/8 in Dia Shank, 3 in OAL, AlTiN Coated