Seco Niagara Cutter 17002318 Elite S738 Extended Reach High Performance Multi-Flute Non-Center Cutting Single End End Mill, 1/4 in Dia Cutter, 0.003 in Corner Radius, 1-1/4 in Length of Cut, 7 Flutes, 1/4 in Dia Shank, 3 in OAL, AlTiN Coated