Carmex MT0250C0618UN

Helical Flute Thread Mill: 5/16-18, Internal, 3 Flute, 1/4″ Shank Dia, Solid Carbide 18 TPI, 0.1970 mm Cut Dia, 0.5800″ LOC, 2-1/2″ OAL, TiAlN Coated