Milwaukee MX4 4-Cutter SDS Max Rotary Hammer Drill Bit 48-20-3966

UNYIELDING REBAR-REINFORCED CONCRETE DOMINANCE

When you're drilling deep into high-PSI concrete or bridge decks, hitting structural rebar isn't a possibility—it is an inevitability. The Milwaukee MX4™ 4-Cutter SDS Max bits are forged for the heavy civil environment where tool failure means expensive downtime. Featuring a solid head carbide design, these bits don't just survive rebar hits; they chew through them with up to 5x the lifespan of standard cutters. For the operator running high-cycle rotary hammers, the optimized flute geometry ensures maximum dust evacuation, keeping the bit cool and maintaining the structural integrity of your substrate while maximizing holes-per-charge in high-torque applications.

• / SOLID HEAD CARBIDE: Provides unmatched durability and the ability to maintain cutting speed through dense aggregate and rebar.
• / ANTI-LOCK 4-CUTTER GEOMETRY: Prevents the bit from binding or seizing when striking metal reinforcements, protecting both the tool and the operator.
• / SHARP CENTERING TIP: Eliminates bit-walk on metal decking or smooth concrete, ensuring precision placement for critical anchor points.
• / WEAR MARK INDICATORS: Integrated visual cues show when the bit no longer meets ANSI B212.15 requirements for anchor fitment, ensuring code compliance.

WHAT'S IN THE BOX

• / (1) MX4 4-Cutter SDS Max Rotary Hammer Drill Bit (48-20-3966)