Scientific Cutting Tools TM170-40A Straight Flute Thread Mill: 1/4-40, Internal, 3 Flutes, 1/4" Shank Dia, Solid Carbide
Straight Flute Thread Mill: 1/4-40, Internal, 3 Flutes, 1/4" Shank Dia, Solid Carbide 40 TPI, 0.17" Cut Dia, 0.5" LOC, TiAlN Coated
$169.03