SECO 10303076 ST5551-.250D1R015.0Z5 SIRA CORNER RADIUS END MILL, 0.25 IN DIA CUTTER, 0.015 IN CORNER RADIUS, 0.015 IN LENGTH OF CUT, (5) FLUTES, 0.25 IN DIA SHANK, 2 IN OAL, SIRON-A