Milwaukee 31/64" COBALT RED HELIX™ Drill Bit

ENGINEERED FOR THERMAL STABILITY IN HARD METAL DRILLING

When drilling through stainless steel, cast iron, or high-tensile alloys, heat is the primary cause of bit failure. The Milwaukee 48-89-2328 utilizes a specialized Cobalt alloy construction to maintain structural integrity and edge sharpness at temperatures that would soften standard high-speed steel. The proprietary RED HELIX™ variable geometry—featuring an aggressive 35° helix angle that transitions to 15°—rapidly clears chips to prevent heat soak and binding. Combined with the QUADEDGE TIP™ and a 135° split point, this bit ensures immediate engagement without walking, providing the mechanical efficiency required for high-torque, professional-grade applications.

• / 135° Split Point: Delivers a precision start on contact and prevents bit walking on hard, curved, or polished surfaces.
• / RED HELIX™ Design: Variable helix geometry clears material faster to limit friction and extend the life of the cutting edge.
• / 3-Flat Secure-Grip™ Shank: Features a reduced 3/8" shank with flattened sides to eliminate bit slippage within the chuck during high-load drilling.
• / Enhanced Tapered Web™: Increases the core thickness of the bit to provide superior flute durability and resistance to torsional breakage.

WHAT'S IN THE BOX

(1) 31/64" Cobalt RED HELIX™ Drill Bit (48-89-2328)