Milwaukee 48-89-2221 3/8” THUNDERBOLT Titanium Coated Drill Bit Milwaukee 48-89-2221 3/8” THUNDERBOLT Titanium Coated Drill Bit is engineered for extreme durability and long life. The QUAD EDGE tip delivers a precision start and four cutting edges to create smaller chips for faster removal and less heat for longer bit life. The Variable Helix design includes an aggressive 35° helical angle, which ends at 15°, Milwaukee 48-89-2221 3/8” THUNDERBOLT Titanium Coated Drill Bit sharp to extend performance. A specially designed parabolic flute form clears chips fast, while the 3-Flat Secure-Grip shank holds the bit firmly in the drill chuck.

The 135° split point tip delivers a precision start and prevents walking for fast, accurate holes. Effective for drilling on curved surfaces, Milwaukee 48-89-2221 3/8” THUNDERBOLT Titanium Coated Drill Bit requires less effort to drill through wood, metal and PVC, and are highly recommended for use with portable drills.