Milwaukee MX4 4-Cutter SDS Max Rotary Hammer Drill Bit 48-20-3956

ARMORED AGGREGATE DOMINANCE

When you are punching through reinforced concrete on a bridge deck or high-rise foundation, hitting rebar isn't a possibility—it is an inevitability. The Milwaukee MX4™ 4-Cutter SDS Max bits are engineered for the sheer survival required in heavy civil environments, where a snapped bit or a jammed head means blown production schedules and operator fatigue. This isn't just a consumable; it is an insurance policy against downtime in the toughest hard-aggregate conditions on the planet.

• / SOLID HEAD CARBIDE: Delivers up to 5x more life than standard bits when boring through high-tensile steel reinforcement and dense masonry.
• / ANTI-LOCK 4-CUTTER GEOMETRY: Prevents the bit from seizing or binding upon rebar contact, protecting both your rotary hammer's internal clutch and the operator's wrists.
• / OPTIMIZED FLUTE DYNAMICS: Moves dust and heavy debris out of the hole 15% faster, reducing thermal buildup and maximizing battery runtime on cordless MX FUEL or M18 hammer units.
• / ANSI WEAR INDICATORS: Provides real-time visual confirmation that your holes still meet ANSI B212.15 tolerances for structural anchor compliance.

WHAT'S IN THE BOX