Milwaukee Thunderbolt 31/64 In. Black Oxide Drill Bit Category_Work & Workshop Lighting Blue coat surface treatment is

Blue coat surface treatment is heat resistant and provides a non-stick

High performance burst-400 psi

milk paint finish

in with a special material that is an jacket and high-performance a burst of PSI

Packed 25 per bag

Milwaukee Thunderbolt 31/64 In. Black Oxide Drill Bit Category_Work & Workshop Lighting Blue coat surface treatment isMilwaukee 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.