30 DEG HELICAL THREAD MILL CARBIDE TIN (1/2-28 MIN ID) INTERNAL OR EXTERNAL .400 DIA X 1.087 LOC - 4 FLUTES (1/2 SHANK X 3-1/2 OAL).
30 DEG HELICAL THREAD MILL CARBIDE TIN (1/2-28 MIN ID) INTERNAL OR EXTERNAL .400 DIA X 1.087 LOC - 4 FLUTES (1/2 SHANK X 3-1/2 OAL).