YG1 TE580 0.37 in Milling Dia, 3.5 in OAL, 4 Flutes, Carbide, TiAlN

Thread Mills Solid Carbide, 60 Degree, Helical Flute, Tialn Coated For Unified Internal Threads (Ansi B 1.1)

Yg-1 Cutting Tools Te580 1/2-20 Thread Size | Unified | 4 Flute | Solid Carbide | Tialn Coated | Helical Flute Thread Mill