Milwaukee 7/8" x 24" x 29" MX4™ 4-Cutter SDS MAX Rotary Hammer Drill Bit 48-20-3947

MAXIMIZE DRILLING UPTIME IN REINFORCED CONCRETE

When drilling deep into structural concrete, the mechanical integrity of your bit determines the speed of the entire job. The MX4™ 4-Cutter SDS MAX bit is engineered for high-cycle professional use where striking rebar is an inevitability, not an accident. By utilizing a solid head carbide design, this bit maintains its geometry through hard aggregate and high-tensile steel, while the integrated rebar guards prevent the catastrophic lock-up that causes tool kickback and downtime. For crews running cordless SDS MAX hammers, the optimized flute geometry is a critical ROI factor, clearing dust rapidly to reduce thermal friction and delivering up to 15% more holes per battery charge.

• / Solid Head Carbide: Engineered to deliver up to 5x longer life in heavy rebar and hard aggregate applications.
• / 4-Cutter Geometry: Prevents binding and lock-up when striking rebar, protecting both the operator and the tool's drivetrain.
• / Sharp Centering Tip: Provides exact spot drilling in concrete and metal decking, eliminating bit walk for precise anchor placement.
• / Wear Mark Indicators: Visual indicators show when the bit no longer meets ANSI B212.15 requirements for critical anchor fitment.
• / High-Volume Flutes: Optimized to remove dust faster, reducing heat buildup and extending the runtime of cordless rotary hammers.

WHAT'S IN THE BOX

(1) 7/8" x 24" x 29" MX4™ 4-Cutter SDS MAX Rotary Hammer Drill Bit (48-20-3947)