Milwaukee Thunderbolt 7/16 In. Black Oxide Drill Bit Norton 3/8" Diameter

3/8" Diameter

floral design on white glass

Drains & Toilets

Achieves 30 Times Longer Life Than Bonded Abrasives

1/4' shank

Milwaukee Thunderbolt 7/16 In. Black Oxide Drill Bit Norton 3/8" DiameterMilwaukee Thunderbolt Black Oxide jobber length drill bits are designed for extreme durability and long life. The Thunderbolt web features a thicker core than a standard drill bit to provide ultimate strength and protect against side load breakage. A specially designed parabolic flute form clears chips and debris fast to keep the bit cool. The 135 degree split point tip delivers a precision start and prevents walking for fast, accurate holes.