Irwin Black Oxide Drill Bit Set with Index, 29 pc

1/16" to 1/2" in 1/16" increments
135° split point for resists wandering on metal surfaces
Black oxide treatment resists corrosion
Reduced shank on bits larger than 3/8"
Steel soft-grip overmolded case protects kit if dropped
Automatic indexing for easy bit access and identification
Removable indexes allow you to take only the drills you need
Tap and drill chart included for convenient reference