Sandvik Coromant Step and Chamfer Drill, Series: CoroDrill 860, Imperial, 0.2657 in Diameter Minimum Hole, 0.3582 in Diameter Maximum Hole, 3.504 in Overall Length, 2 Steps, 0.827 in Step Depth, 2 Hole, 2 Flutes, SSK Flute, 1.575 in Flute Length, 0.3937 x 1.5748 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