Milwaukee MX4 4-Cutter SDS MAX Rotary Hammer Drill Bit 5/8" x 15" x 21" 48-20-8418

DOMINATE REBAR AND HARD AGGREGATE WITH PRECISION 4-CUTTER GEOMETRY

When your jobsite requires deep-hole drilling through reinforced concrete, the MX4™ 4-Cutter SDS MAX bit is engineered to eliminate the primary cause of bit failure: rebar lock-up. The solid head carbide construction provides a massive mechanical advantage over standard 2-cutter bits, pulverizing hard aggregate and steel reinforcement without the binding that leads to snapped shanks or motor strain. Designed for high-output professional use, the optimized flute geometry accelerates dust extraction, which not only keeps the bit running cooler but also maximizes the efficiency of your cordless SDS MAX rotary hammers, delivering up to 15% more holes per charge.

• / Solid Head Carbide delivers up to 5x longer life in concrete with rebar compared to standard bits.
• / Integrated Rebar Guards protect the carbide head from damage during high-impact strikes against steel.
• / Sharp Centering Tip ensures exact spot drilling, preventing bit walk on smooth or uneven concrete surfaces.
• / Wear Mark Indicators provide a clear visual cue for when the bit no longer meets ANSI requirements for anchor fitment.
• / Optimized Flute Design reduces heat buildup and friction for faster drilling and improved battery runtime.

TECHNICAL SPECIFICATIONS

Diameter	5/8"
Drilling Depth	15"
Overall Length	21"
Shank Type	SDS-MAX
Cutter Style	4-Cutter
Material	Solid Head Carbide
Compliance	ANSI B212.15

WHAT'S IN THE BOX

(1) 5/8" x 15" x 21" MX4™ 4-Cutter SDS MAX Rotary Hammer Drill Bit (48-20-8418)