SECO 10303081 ST5551-.375D1R045.0Z5 SIRA CORNER RADIUS END MILL, 0.37 IN DIA CUTTER, 0.045 IN CORNER RADIUS, 0.5 IN LENGTH OF CUT, (5) FLUTES, 0.37 IN DIA SHANK, 2.5 IN OAL, SIRON-A