Milwaukee MX4 4-Cutter SDS Max Rotary Hammer Drill Bit 1/2" x 54" x 60" 48-20-3909

EXTREME REACH REBAR-READY DRILLING PERFORMANCE

When your project demands deep-hole penetration through reinforced concrete, the Milwaukee MX4 4-Cutter SDS Max bit is the industrial standard for speed and longevity. At a massive 60-inch overall length, maintaining concentricity and heat management is critical. The solid head carbide design isn't just about durability; it is about maintaining a true-to-size hole for critical anchor placements even after encountering structural rebar. By utilizing a symmetrical 4-cutter geometry, this bit prevents the common binding or lock-up that occurs when 2-cutter bits strike steel, protecting both your rotary hammer's clutch and the operator. Furthermore, the optimized flute design is engineered to evacuate high volumes of dust over the full 54-inch usable length, reducing frictional drag and allowing cordless SDS Max hammers to deliver up to 15% more holes per charge.

• / Solid head carbide delivers up to 5x longer life in concrete with rebar compared to standard masonry bits.
• / 4-Cutter geometry prevents lock-up and binding when hitting rebar, ensuring smoother drilling and increased jobsite safety.
• / Sharp centering tip enables exact spot drilling, preventing bit walk on hard aggregate or metal decking.
• / Optimized variable flutes clear dust faster to reduce heat buildup and maximize cordless tool runtime per battery charge.
• / Integrated wear mark indicators provide a clear visual cue for when the bit no longer meets ANSI B212.15 requirements for anchor fitment.

WHAT'S IN THE BOX

(1) 1/2" x 54" x 60" MX4 4-Cutter SDS Max Rotary Hammer Drill Bit (48-20-3909)