Milwaukee 1-1/8" x 17" x 21" MX4 4-Cutter SDS MAX Rotary Hammer Drill Bit 48-20-8946

STRUCTURAL REINFORCEMENT DOMINANCE

In the world of heavy civil construction, hitting rebar isn't an accident—it is a daily reality on the bridge deck or the structural footing. The Milwaukee MX4™ 4-Cutter SDS MAX bit is forged for the absolute survival of your schedule in the most punishing high-PSI concrete. This industrial-grade bit features a solid head carbide design that refuses to bind or shatter when encountering steel reinforcement, ensuring that deep-bore anchoring and structural penetrations continue without costly tool failure. When precision and sheer durability are the only metrics that matter, the MX4 sets the benchmark for aggregate destruction.

• / Solid Head Carbide: Engineered for 5x longer life when drilling through high-density concrete and heavy rebar.
• / Integrated Rebar Guards: Reinforced geometry prevents tip failure and lock-up in the most demanding aggregate environments.
• / Sharp Centering Tip: Eliminates bit walk and ensures exact placement on smooth surfaces or metal decking.
• / High-Volume Flutes: Optimized dust extraction reduces heat friction and delivers up to 15% more holes per battery charge.
• / Wear Mark Indicators: Provides visual confirmation that the bit maintains ANSI B212.15 tolerances for precise anchor fitment.

WHAT'S IN THE BOX

(1) 1-1/8" x 17" x 21" MX4™ 4-Cutter SDS MAX Rotary Hammer Drill Bit (48-20-8946)