Material: HSS-Co M35 Cobalt Size: 1.5, 2.0, 2.5, 3.0, 3.2, 3.5, 4.0, 4.5, 4.8, 5.0, 5.5, 6.0, 6.5mm Quantity: 13pcs Size of Packing Box : 137mm x 88mm x 18mm Features: * Precision ground to insure concentricity of tip & body. * Penetrates faster with less pressure. * Smooth flutes & special surface treated for effective chip flow. * Premium quality high speed steel, special heat treatment to remain sharper edges, & reduce wear. * All dimensional & element tolerances conform to one of ASME/ANSI B94.11M, NAS907, USCTI Standard. * The drills are ideal for effective drilling in hard metals including stainless steel and others. * 135º chisel angle with Split Point may be used with heavier feeds (Quick-Cut) in harder materials, and avoid \"Walk\" or Wander\". * It is popular in hand held drilling applications to reduce breakage and eliminate skidding or walking. Package Included: 1 set HSS M35 drill (13 pcs)