Seco Niagara Cutter 17002321 Elite S738 High Performance Multi-Flute Non-Center Cutting Single End Stub Length End Mill, 3/8 in Dia Cutter, 0.005 in Corner Radius, 1/2 in Length of Cut, 7 Flutes, 3/8 in Dia Shank, 2-1/2 in OAL, AlTiN Coated