Seco Niagara Cutter 17002327 Elite S738 High Performance Long Length Multi-Flute Non-Center Cutting Single End End Mill, 3/8 in Dia Cutter, 0.005 in Corner Radius, 1-1/2 in Length of Cut, 7 Flutes, 3/8 in Dia Shank, 3-1/2 in OAL, AlTiN Coated