Milwaukee® 48-89-2722 Thunderbolt® Secure-Grip™ General Purpose Jobber Length Drill, 1/4 in Dia x 4 in L, HSS

Jobber Length Drill Bits
643121 MFG #: 48-89-2722
2.70000 / ea

Milwaukee® 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 fast, while the 3-Flat Secure-Grip™ shank holds the bit firmly in the drill chuck. The 135 deg split point tip delivers a precision start and prevents walking for fast, accurate holes. Effective for drilling on curved surfaces, Milwaukee® Thunderbolt Black Oxide bits require less effort to drill through metal, wood and PVC and are highly recommended for use with portable drills.
QTY
  • Applications
  • Features
Portable Drills
Extreme durability - thicker web provides greater strength and longer life
Fast, accurate drilling - 135 DEG split point tip starts on contact to prevent walking, while the parabolic flute clears chips fast
Reduced slipping - 3-flat Secure Grip™ shank holds the bit firmly in the drill chuck
Corrosion resistant - black oxide coating provides lubricity and resists corrosion of the bit
3-flat Secure-Grip™ shank holds the bit firmly in the drill chuck
Thunderbolt Web, Provides Longer Life And Faster Driller Times; Parabolic Flute, Clears Chips Faster; 135 DEG Degree Split Point, Precision Start No Walking; 3-Flat Secure Grip Shank, Reduces Bit Slipping In Chuck; Point Type: Split Point; Flute Type: Parabolic; Drill Point: 135 DEG