Seco Niagara Cutter 03043603 SN200R High Feed Medium Length Non-Center Cutting Single End End Mill, 5/16 in Dia Cutter, 0.0373 in Corner Radius, 0.016 in Length of Cut, 2 Flutes, 3/8 in Dia Shank, 4 in OAL, AlTiN Coated