Milwaukee SDS MX4™ 4-Cutter Masonry Drill Bit, 1/4"X4"X6"

Milwaukee SDS MX4™ 4-Cutter Masonry Drill Bit, 1/4"X4"X6"

The Milwaukee 48-20-7331 SDS MX4™ 4-Cutter Masonry Drill Bit (1/4" x 4" x 6") is a high-performance drilling bit built to power through concrete, masonry, and rebar with precision and durability. Featuring a solid carbide head and advanced 4-cutter design, it delivers longer life and smoother drilling while preventing lock-ups when hitting tough materials. With fast dust removal flutes and a sharp centering tip, this bit keeps drilling efficient, accurate, and far less frustrating when the job gets demanding.

Country of Origin
Made in Germany

Key Features / Specifications

• Model / Part Number: 48-20-7331
• Brand / Series: Milwaukee SDS MX4™
• Bit Size: 1/4" Diameter
• Length: 4" usable length / 6" overall length
• Shank Type: SDS-Plus
• Head Design: Solid carbide 4-cutter head
• Durability: Delivers up to 5x longer life in concrete with rebar
• Rebar Protection: Rebar guards for increased durability in tough materials
• Tip Design: Sharp centering tip for precise spot drilling
• Flute Design: Variable flutes for faster dust removal and reduced heat
• Efficiency: Up to 20% more holes per battery charge
• Anti-Lock Feature: 4-cutter design prevents lock-up in rebar
• Standards: Meets ANSI B212.15 for anchor compatibility
• Wear Indicator: Wear mark shows end of life and ANSI compliance status
• Compatibility: Fits all SDS-Plus rotary hammers

Ideal For

• Drilling into concrete, masonry, and concrete with rebar
• Anchor installation requiring ANSI-compliant hole sizes
• Jobs where durability and long bit life are critical
• Professionals using SDS-Plus rotary hammers
• Anyone tired of hitting rebar and stopping cold—this bit keeps things moving forward