- Oxide treatment resists corrosion, helps prevent bit from rusting
- 135° split point tip starts on contact, cuts with less force
- Reduced shank above 3/8" allows the use of larger drill bits in a 3/8" chuck
- Rubber overmolded case protects kit if dropped
- Tap and Drill selection chart for convenient reference
- Automatic indexing for easy bit access and identification
- Removable cartridges: easy to carry bits from case to worksite
- Sizes include 1/16" to 1/2" in 1/64" increments
IRWIN 29 Piece Black Oxide Metal Index Drill Bit Set.