Milwaukee Thunderbolt 1/2 In. Black Oxide Drill Bit Dremel Solvent weld joints

Solvent weld joints

Backed by a 30-year limited warranty and 180-day Exposure Guarantee when used with ZIP System sheathing[1]

adjustable nozzle

ensuring your hose’s durability

The 9903 also features less noise: at only 84dB

Milwaukee Thunderbolt 1/2 In. Black Oxide Drill Bit Dremel Solvent weld jointsMilwaukee 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.