DEWALT Drill Bit Set, 21-Piece, 135 Degree Split Point, 31 Degree Helix, Black Oxide Coated, For Plastic, Wood and Metal (DWA1181)

DEWALT 21-pack black oxide twist drill bit set is ideal for general-purpose drilling materials like metal, hardwood, softwood, PVC and fiberglass, Parabolic flute design increases chip ejection in metal and wood drilling applications, Black oxide coating helps resist corrosion and increase durability, so your drill bits last longer, 135° Split-point tips drill on contact and prevents walking on the hard surface you’re working on, 31° Helix reduces over aggressiveness of true parabolic flute, making it ideal for drilling deep holes