Milwaukee Spline Bit 4-Cutter 1-1/2" x 22"

STRUCTURAL SUBSTRATE DOMINANCE

When your site schedule relies on boring through high-PSI reinforced concrete, the Milwaukee 48-20-4415 Spline bit provides the raw endurance required for heavy civil infrastructure projects. This high-capacity 4-cutter is engineered specifically for the most aggressive Spline-drive rotary hammers, offering a mechanical solution for bridge abutments, foundation anchors, and deep structural penetrations where 2-cutter bits frequently bind and fail. Designed for sheer survival, the carbide tip is optimized for high-torque environments, ensuring maximum power transfer from the tool's piston directly into the aggregate.

• / Symmetrical 4-Cutter Geometry: Ensures precision-centered, rounder holes for critical mechanical anchors while preventing lock-up during rebar strikes.
• / High-Volume Dust Fluting: Engineered with an open-spiral design to clear heavy debris instantly, significantly reducing friction heat and preventing bit seizure.
• / Rebar-Reinforced Carbide: Patented chamfered tips allow the bit to deflect off steel reinforcement, preventing catastrophic tip failure and increasing bit ROI.
• / Spline Drive Interface: Optimized for heavy-duty energy transfer in high-impact rotary hammers, maintaining drilling speed in the hardest substrates.

WHAT'S IN THE BOX

• / (1) 1-1/2" x 17" x 22" Spline 4-Cutter Rotary Hammer Drill Bit (48-20-4415)