HSS 55/64" MT3 Taper Shank Drill,MT3 Taper Shank Drill HSS 55/64", General purpose flute construction for use in wide variety of materials,High Speed Steel, Standard Shank, 118 Degree Point, Buy our best brand online Quality products Free shipping on orders over $15. 55/64" MT3 Taper Shank Drill HSS.