DescriptionSpecificationsDescriptionHelical Flute Thread Mill: 1/2-13, Internal, 4 Flute, 3/8" Shank Dia, Solid Carbide 13 TPI, 0.35" Cut Dia, 7/8" LOC, 3" OAL, AlTiN+ CoatedSpecificationsManufacturer NameScientific Cutting Tools