30 DEG HELICAL THREAD MILL CARBIDE TIN (1/4-20 MIN ID) INTERNAL OR EXTERNAL .170 DIA X 1/2 LOC - 3 FLUTES (1/4 SHANK X 2-1/2 OAL)
30 DEG HELICAL THREAD MILL CARBIDE TIN (1/4-20 MIN ID) INTERNAL OR EXTERNAL .170 DIA X 1/2 LOC - 3 FLUTES (1/4 SHANK X 2-1/2 OAL)