Irwin 15-Piece Black Oxide Drill Bit Set

135 deg. split point. Black oxide coating. Parabolic flute for improved chip ejection. 12" length. Includes: 1/16" (2), 5/64", 3/32" (2), 7/64", 1/8" (2), 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", and 3/8", plastic case. Case includes a full-length metal hinge pin for maximum durability and long life, and bit identification is simple with easy-to-read size markings.