SDS Plus 4CT MX4™ 1/2" X 4" X 6"

The Milwaukee 48-20-7371 SDS Plus 4CT MX4™ 1/2" x 4" x 6" Drill Bit is a high-performance rotary hammer bit engineered for fast, reliable drilling in concrete, brick, block, and reinforced concrete with embedded rebar.

Built with Milwaukee’s MX4™ solid carbide 4-cutter head, this bit is designed for maximum durability and impact resistance in tough masonry. The four-cutter geometry improves hole accuracy, reduces walking, and helps maintain performance when encountering rebar compared to traditional 2-cutter bits.

A breaker-point tip aggressively fractures material for faster penetration, while reinforced flutes efficiently clear dust and debris to reduce heat buildup and improve drilling speed. The design also helps extend overall bit life under heavy-duty jobsite conditions.

The 1/2-inch diameter makes it ideal for medium-to-large anchor installations, and the 4-inch working depth (6-inch overall length) provides controlled, accurate drilling for standard structural applications.

Key Features:

• MX4™ 4-cutter carbide head for high durability in rebar
• Breaker-point tip for fast drilling into concrete
• Reinforced flutes for improved debris removal and reduced vibration
• SDS-Plus shank fits all SDS-Plus rotary hammers
• Designed for reinforced concrete and masonry applications

Ideal Applications:

• Anchoring into concrete, brick, and block
• Drilling through light-to-moderate rebar
• Electrical, plumbing, and mechanical installations
• General construction and renovation work