Cutter SDS Plus Rotary Hammer Drill Bits, 5"Piece

Milwaukee 48-20-7498 MX4™ SDS PLUS 4-Cutter Rotary Hammer Bit

The Milwaukee 48-20-7498 MX4™ SDS PLUS rotary hammer drill bit is engineered for high-performance drilling in reinforced concrete, masonry, and structural materials. Featuring a solid carbide head with quad cutting edges, this bit offers improved durability and reduced bit failure when encountering rebar or dense aggregate.

Designed for SDS PLUS rotary hammer tools, the 4-cutter geometry minimizes lock-up in rebar while maintaining precise hole formation. Variable flute widths efficiently evacuate debris, reducing internal friction and allowing for faster drilling and increased runtime in cordless tools.

Key Features

• Solid Head Carbide: Full-head design improves impact resistance and extends bit life in hard material
• 4-Cutter Geometry: Enhances rebar handling while maintaining consistent bore diameter
• Centering Tip: Optimized for spot drilling and accurate starts in concrete and embedded metal
• Rebar Guard: Reinforced cutting edges reduce head damage when striking rebar
• Variable Flute Design: Improves dust removal and thermal control for increased hole count per charge
• Wear Mark Indicator: Indicates when bit no longer meets ANSI tolerance for anchor hole accuracy

Technical Specifications

• Shank Type: SDS PLUS
• Cutter Type: 4-cutter solid carbide head
• Applications: Concrete, masonry, rebar-embedded material, metal deck
• Standards: ANSI-compliant wear indicator for anchor installations
• Availability: Offered in single units, kits, and contractor bulk packs

Application Guidance

This bit is suited for professional concrete drilling tasks, including anchor setting, conduit pathways, and rebar-penetration drilling. Use with SDS PLUS-compatible rotary hammer drills operating within recommended RPM and impact force specifications. Avoid prolonged use on steel to prevent premature wear.