Sandvik Coromant Step and Chamfer Drill, Series: CoroDrill 860, Imperial, 0.4035 in Diameter Minimum Hole, 0.5433 in Diameter Maximum Hole, 4.409 in Overall Length, 2 Steps, 1.22 in Step Depth, 2 Hole, 2 Flutes, SSK Flute, 2.283 in Flute Length, 0.5511 x 1.7716 in Shank, Cylindrical Shank, 147 deg Point, Split Point, Right Hand Cutting Direction, Solid Carbide Cutting Edge, Solid Carbide, TiAlN , Applicable Materials: Steel, Stainless Steel and Aluminum