The Milwaukee 48-89-2718 3/16 in. Thunderbolt Black Oxide Drill Bit features black oxide construction and a thick core for durability. This drill bit is excellent for drilling on curved surfaces, and the parabolic flute form helps clear away chips and debris to keep the bit cool. This drill bit is recommended for use with portable drills.
- 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