Milwaukee 21/64" Cobalt RED HELIX Drill Bit 48-89-2318

ENGINEERED FOR EXTREME DURABILITY IN STAINLESS AND HARD METALS

The Milwaukee 21/64" Cobalt RED HELIX™ drill bit is purpose-built for high-heat, high-torque applications where standard high-speed steel bits fail. By utilizing a specialized cobalt alloy, this bit maintains its structural integrity and cutting edge while drilling through stainless steel, cast iron, and other thick metals. The variable helix geometry—transitioning from an aggressive 35° angle to a 15° exit—is a mechanical breakthrough that facilitates rapid chip evacuation, significantly reducing thermal buildup and preventing the bit from binding in deep-hole applications. For the professional looking to maximize ROI on consumables, the 135° split point eliminates the need for center punching by preventing bit walking, ensuring immediate engagement and precision in every bore.

• / 135° Split Point Tip delivers a precision start on contact and prevents walking on curved or hardened surfaces.
• / RED HELIX™ Variable Geometry provides rapid chip removal to limit heat friction and extend the service life of the cutting edge.
• / Cobalt Construction offers up to 10X more life than standard Black Oxide bits in extreme metal drilling scenarios.
• / 3-Flat Secure-Grip™ Shank prevents the bit from spinning in the chuck under high-torque loads, ensuring consistent power transfer.

WHAT'S IN THE BOX

(1) 21/64" Cobalt RED HELIX™ Drill Bit (48-89-2318)