Milwaukee SDS MAX 4-Cutter Masonry Drill Bit, 1-1/4"X10"X15"

Milwaukee SDS MAX 4-Cutter Masonry Drill Bit, 1-1/4"X10"X15"

The 48-20-3970 Milwaukee SDS MAX 4-Cutter Masonry Drill Bit (1-1/4" x 10" x 15") is a premium rotary hammer bit built for fast, durable drilling in concrete and masonry—especially concrete with rebar. Its solid head carbide and rebar guards boost durability in hard aggregate, while the 4-cutter head design helps prevent lock-up in rebar to reduce downtime. With optimized flutes for faster dust removal and lower heat, it’s designed to deliver more holes per battery charge on cordless SDS-MAX hammers and includes wear mark indicators to show when it no longer meets ANSI requirements.

Country of Origin
Made in Germany

Key Features / Specifications

• Model / Part Number: 48-20-3970
• Brand: Milwaukee
• Product Type: SDS-MAX 4-cutter masonry drill bit
• Bit Diameter: 1-1/4 in
• Usable Length: 10 in
• Overall Length: 15 in
• Shank Type: SDS-MAX
• Head Material: Solid head carbide
• Durability: Up to 5x longer life in concrete with rebar; rebar guards for hard aggregate and rebar
• Accuracy: Sharp centering tip for exact spot drilling in concrete and metal decking
• Rebar Performance: 4-cutter design helps prevent lock-up in rebar, reducing downtime
• Flute Design: Optimized flutes remove dust faster to reduce heat and deliver up to 15% more holes per battery charge
• Wear Monitoring: Wear mark indicators show end of life and when the bit no longer meets ANSI requirement
• Standards: Meets ANSI B212.15 to fit common anchors
• Tool Compatibility: Fits all SDS-MAX rotary hammers
• Recommended Materials: Concrete with rebar and masonry

Ideal For

• Drilling anchor holes in concrete and masonry, including rebar-reinforced concrete
• Pros who want to reduce downtime from rebar lock-up
• Cleaner, cooler drilling with faster dust removal using optimized flutes
• Work requiring ANSI-compliant holes for common anchor systems
• Use with SDS-MAX rotary hammers on demanding jobsites