DOMINATE REBAR AND HARD AGGREGATE WITH MX4 TECHNOLOGY

When you are drilling deep into reinforced concrete, the last thing you need is a bit that binds or shears the moment it kisses rebar. The Milwaukee MX4™ 4-Cutter SDS MAX bit is engineered to solve the most common failure points in heavy-duty masonry drilling. By utilizing a solid head carbide design, this bit maintains structural integrity under extreme heat and pressure, delivering up to 5x longer life compared to standard tipped bits. The integrated rebar guards act as a shield, preventing the head from shattering or locking up when encountering steel reinforcement, while the sharp centering tip ensures your holes start exactly where you marked them, eliminating bit walk on smooth surfaces or metal decking.

• / Solid head carbide construction provides superior thermal resistance and longevity in high-PSI concrete applications.
• / Integrated rebar guards prevent the bit from locking up or snapping upon contact with reinforcement steel, reducing downtime.
• / Sharp centering tip allows for surgical precision during spot drilling, preventing bit migration on hard aggregate.
• / Optimized flute geometry accelerates dust extraction, keeping the bit cooler and maximizing holes per charge on cordless SDS MAX platforms.
• / Wear mark indicators provide a clear visual cue when the bit no longer meets ANSI B212.15 tolerances for critical anchor setting.

WHAT'S IN THE BOX

(1) 1-1/4" x 24" x 29" MX4 4-Cutter SDS MAX Rotary Hammer Drill Bit (48-20-3973)