Milwaukee MX4 4-Cutter SDS Max Rotary Hammer Drill Bit 48-20-3990

STRUCTURAL CONCRETE DOMINANCE

When you're dealing with high-PSI structural concrete and a forest of rebar, standard bits just become scrap metal. The Milwaukee MX4 4-Cutter SDS Max series is engineered for the heavy civil contractor who can't afford the downtime of a locked-up bit or a shattered head. These German-made monsters feature a solid-head carbide design that doesn't just graze rebar—it pulverizes the surrounding aggregate and maintains structural integrity through the toughest strikes. With optimized flute geometry for rapid dust evacuation, you're looking at cooler operating temperatures and significantly more holes per charge on your high-output cordless rotary hammers.

• / Solid Head Carbide: Delivers up to 5x longer life in heavy-duty concrete with rebar compared to standard bits.
• / Integrated Rebar Guards: Protects the carbide geometry from catastrophic failure during high-torque encounters with steel.
• / Sharp Centering Tip: Ensures dead-accurate hole placement on slick concrete or metal decking without bit walk.
• / Wear Mark Indicator: Provides clear visual confirmation that the bit still meets ANSI B212.15 requirements for anchor setting.
• / High-Efficiency Flutes: Rapidly clears debris to reduce friction, resulting in 15% more holes per battery charge.

WHAT'S IN THE BOX

(1) MX4 4-Cutter SDS Max Rotary Hammer Drill Bit (48-20-3990)