DescriptionSpecificationsDescriptionHelical Flute Thread Mill: #4-40, Internal, 2 Flute, 1/4" Shank Dia, Solid Carbide 40 TPI, 0.079" Cut Dia, 3/16" LOC, 2.5" OAL, AlTiN+ CoatedSpecificationsManufacturer NameScientific Cutting Tools