SDS Max 4CT MX4™ 1" X 17" X 21"
SDS Max 4CT MX4™ 1" X 17" X 21"
48-20-3954
The Milwaukee SDS Max 4CT MX4™ 1" x 17" x 21" is a heavy-duty rotary hammer drill bit designed for drilling large-diameter holes in concrete, reinforced concrete, and masonry. It is built for high-demand applications where durability, speed, and reliability are critical—especially when encountering rebar.
This bit features a solid carbide 4-cutter head, which is a major upgrade over traditional 2-cutter designs. The full-head carbide construction delivers significantly longer life and improved performance in reinforced concrete, helping prevent premature wear when hitting embedded rebar.
The 4-cutter geometry also reduces the chance of the bit “catching” or binding when drilling through rebar, minimizing downtime and improving operator control.
Performance & Design
- Solid carbide head → up to 5x longer life in concrete with rebar
- Rebar guards → protect cutting edges in hard aggregate and steel
- Centering tip → accurate spot drilling and reduced walking
- 4-cutter design → prevents lock-up and improves hole consistency
- Optimized flute design → removes dust faster and reduces heat buildup
- Wear mark indicator → shows when the bit no longer meets ANSI spec
Size & Capacity
- Diameter: 1"
- Cutting depth (usable length): 17"
- Overall length: 21"
- Shank: SDS Max (for large rotary hammers)
Ideal For:
- Structural anchor drilling
- Concrete with rebar
- Commercial construction and infrastructure work
- Deep hole drilling applications
- Heavy-duty mechanical, electrical, and plumbing installs
