Milwaukee SDS Plus 4-Cutter MX4™ 1/4" X 4" X 6" Drill Bit 48-20-7331

REINFORCED CONCRETE DOMINANCE WITH MX4™ 4-CUTTER TECHNOLOGY

When drilling into high-PSI concrete reinforced with rebar, standard 2-cutter bits are a liability that lead to frequent lock-ups and snapped heads. The Milwaukee MX4™ series is engineered to solve these mechanical failures through a solid head carbide construction and integrated rebar guards. This design maintains structural integrity even when striking hard aggregate, preventing the bit from binding and protecting the internal gears of your rotary hammer. The variable flute geometry provides a critical advantage in dust evacuation, significantly reducing heat friction and allowing your cordless platform to deliver up to 20% more holes per battery charge. For professionals requiring precision and long-term ROI, the wear mark indicator ensures every anchor set meets ANSI compliance throughout the life of the bit.

• / Solid head carbide delivers up to 5X longer life in concrete with rebar compared to standard masonry bits.
• / 4-cutter geometry prevents lock-up in rebar, reducing downtime and protecting the operator from high-torque kickback.
• / Sharp centering tip allows for exact spot drilling in concrete and metal decking, eliminating bit walking.
• / Variable flutes optimize dust removal to lower operating temperatures and extend battery runtime.
• / Wear mark indicator provides a clear visual signal when the bit no longer meets ANSI B212.15 requirements for anchor fitment.

WHAT'S IN THE BOX

(1) SDS Plus 4-Cutter MX4™ 1/4" X 4" X 6" Drill Bit (48-20-7331)