29pc Thunderbolt Black Oxide Drill Bit Set

Designed for extreme durability and long life. Thicker core than standard drill bits and protects against side-load breakage. Parabolic flute form clears chips and debris fast. 135-Degree Split Point tip starts on contact for fast and accurate holes. 3-Flat secure grip shank helps reduce bit slippage in chuck. Black oxide coating. Comes with 1/16" through 1/2" by 64ths. Includes storage box.