Seco Niagara Cutter 03043604 SN400R High Feed Non-Center Cutting Single End Stub Length End Mill, 5/16 in Dia Cutter, 0.0373 in Corner Radius, 0.016 in Length of Cut, 4 Flutes, 3/8 in Dia Shank, 2-1/2 in OAL, AlTiN Coated