Milwaukee SDS MX4™ 4-Cutter Masonry Drill Bit, 9/16"X4"X6"

Milwaukee SDS MX4™ 4-Cutter Masonry Drill Bit, 9/16"X4"X6"

The 48-20-7381 Milwaukee SDS MX4™ 4-Cutter Masonry Drill Bit is a high-performance drilling solution engineered for extreme durability and precision in concrete and reinforced materials. Featuring a solid carbide head and 4-cutter design, it powers through concrete with rebar without binding or slowing down. With fast dust removal and a sharp centering tip, this bit is built to drill cleaner, faster, and longer—because stopping mid-hole is nobody’s idea of progress.

Country of Origin
Made in Germany

Key Features / Specifications

• Model / Part Number: 48-20-7381
• Brand / Series: Milwaukee SDS MX4™
• Product Type: SDS-Plus masonry drill bit
• Size: 9/16" diameter x 4" usable length x 6" overall length
• Cutting Head: Solid carbide head for up to 5X longer life in concrete with rebar
• Design: 4-cutter geometry prevents lock-up when hitting rebar
• Durability: Reinforced rebar guards for extended life in hard aggregate
• Tip: Sharp centering tip for accurate spot drilling in concrete and metal decking
• Flute Design: Variable flutes for faster dust removal and reduced heat buildup
• Efficiency: Up to 20% more holes per battery charge
• Wear Indicator: Mark shows when bit no longer meets ANSI anchor tolerance
• Standards: Meets ANSI B212.15 for anchor compatibility
• Compatibility: Fits all SDS-Plus rotary hammers
• Application: Ideal for concrete, reinforced concrete, and masonry

Ideal For

• Drilling into concrete with rebar without binding or stalling
• Installing anchors requiring ANSI-compliant hole sizes
• Heavy-duty construction where durability and speed matter
• Users running SDS-Plus rotary hammers on demanding jobs
• Anyone who wants a drill bit that keeps going—even when it hits something it doesn’t like