The Milwaukee 48-89-2770 1/8 in. Thunderbolt Black Oxide Drill Bit features a thick core to provide protection against side-load breakage. The black oxide construction is durable, and this drill bit is excellent for drilling on curved surfaces. The parabolic flute form helps clear chips and debris to keep the bit cool.
- Thunderbolt web, provides longer life and faster driller times
- Parabolic flute, clears chips faster
- Black oxide construction for durability
- 135° split point, precision start no walking