8 Piece Cobalt S&D Drill Bit Set Silver & Deming style drill bits with a 118° split point. Made from M35 steel with 5% cobalt, Century’s Cobalt drill bits are designed to cut through extremely hard metals, including stainless steel. Duotone cobalt and black oxide finish for fast chip removal, keeping the bit cool and reducing wear. Cobalt steel will remain sharper while drilling large diameter holes in ferrous and non-ferrous steels and other materials where large diameter holes are required. Reduced 1/2″ shank fits all 1/2″ or larger chucks. Set includes: 9/16″, 5/8″, 11/16″, 3/4″, 13/16″, 7/8″, 15/16″, and 1″ in a metal pop-up index.
