Milwaukee MX4 4-Cutter SDS MAX Rotary Hammer Drill Bit 1/2" x 16" x 21" 48-20-8404

ENGINEERED FOR UNINTERRUPTED DRILLING IN REINFORCED CONCRETE

When anchoring into structural slabs or deep footings, the mechanical failure point for most bits is the inevitable rebar strike. The Milwaukee MX4 series utilizes a solid head carbide geometry that maintains structural integrity under extreme heat and impact, delivering up to 5x longer life compared to standard tipped bits. By integrating specialized rebar guards, this bit prevents the common lock-up and snapping that occurs when a 2-cutter bit binds in steel, ensuring your SDS MAX rotary hammer continues to cycle without damaging the tool's internal clutch or the operator's wrists. The optimized flute design is critical for high-volume cordless applications, clearing dust with enough efficiency to provide a measurable 15% increase in holes per charge on M18 FUEL or MX FUEL platforms.

• / Solid Head Carbide construction delivers superior durability and up to 5x longer life in heavy rebar applications.
• / Integrated Rebar Guards protect the bit from catastrophic failure during hard aggregate and steel encounters.
• / Sharp Centering Tip ensures precise hole placement and prevents bit walking on smooth concrete or metal decking.
• / Wear Mark Indicators provide a clear visual gauge of ANSI B212.15 compliance for critical anchor fitment.
• / High-Efficiency Flute Geometry reduces friction and heat, maximizing holes per battery charge for cordless SDS MAX hammers.

WHAT'S IN THE BOX

(1) 1/2" x 16" x 21" MX4 4-Cutter SDS-MAX Rotary Hammer Drill Bit (48-20-8404)