135 degree split point (sizes 1/16 In. to 11/64 In.) for no slip starting on hard materials. Pilot point on bits over 3/16 In. Bits start on contact for clean and accurate holes. No-spin shank eliminates the bit spinning in the chuck. Tapered web provides greater durability to reduce breaking. Size markings above the shank to prevent wearing away. Gold ferrous oxide to reduce heat dissipation and for higher performance when drilling in metal, wood, or plastic.