Milwaukee SDS MX4™ 4-Cutter Masonry Drill Bit, 7/8"X10"X12"

Milwaukee SDS MX4™ 4-Cutter Masonry Drill Bit, 7/8"X10"X12"

The Milwaukee SDS MX4™ 4-Cutter Masonry Drill Bit is a high-performance, heavy-duty drilling solution engineered for concrete with rebar, delivering up to 5X longer life thanks to its solid carbide head design. Built for tough conditions, the 4-cutter geometry prevents lock-up in rebar, while rebar guards and variable flute design improve durability, reduce heat, and clear dust faster—helping you drill more holes per charge. With a sharp centering tip for precise starts and a wear mark indicator to track end of life, this bit is made to keep you drilling efficiently without surprises halfway through the job.

Country of Origin
Made in Germany

Key Features / Specifications

• Model / Part Number: 48-20-7230
• Brand / Series: Milwaukee SDS MX4™
• Product Type: SDS-Plus masonry drill bit
• Bit Size: 7/8 in. diameter
• Length: 10 in. usable length, 12 in. overall length
• Head Design: Solid carbide head for up to 5X longer life in concrete with rebar
• Cutting Design: 4-cutter geometry prevents lock-up in rebar
• Durability: Rebar guards for increased strength in hard aggregate and reinforced concrete
• Tip: Sharp centering tip for precise spot drilling
• Flute Design: Variable flutes for faster dust removal and reduced heat buildup
• Efficiency: Delivers up to 20% more holes per battery charge
• Wear Indicator: Wear mark shows end of life and ANSI compliance limit
• Standards: Meets ANSI B212.15 for anchor fitment
• Compatibility: Fits all SDS-Plus rotary hammers

Ideal For

• Drilling into reinforced concrete and masonry with rebar
• Contractors needing long-lasting, high-efficiency drill bits
• Jobs requiring precise starts and consistent hole quality
• Users looking to maximize battery life and reduce downtime
• Anyone who prefers their drill bit to power through rebar instead of hitting it and calling it a day