Milwaukee 5" x 12" Diamond Premium Wet Core Bit Extension

EXTEND YOUR REACH THROUGH DEEP STRUCTURAL CONCRETE

When punching through thick foundations or reinforced bridge decks, standard core bit lengths often fall short of the required penetration. This 12-inch extension is engineered for heavy civil applications, providing the necessary depth for utility penetrations and structural sampling without sacrificing the rigidity required for high-torque MX FUEL or corded core rigs. Designed specifically for wet-drilling environments, it maintains the structural integrity needed to withstand the constant friction and torque of deep-bore operations. To ensure maximum tool life and prevent thread seizing under extreme heat, always apply anti-seize lubricant before mating the extension to your bit.

• / 12-inch reach expansion allows for deep-bore applications in slab-on-grade or thick structural walls where standard bits cannot reach.
• / Wet-use optimized design ensures consistent performance and durability during high-volume water cooling and slurry management.
• / High-strength steel construction maintains concentricity, minimizing vibration and run-out at high RPMs for cleaner holes.
• / Universal 1-1/4"-7 thread pattern provides seamless compatibility with Milwaukee Premium wet core bits and professional-grade rigs.

WHAT'S IN THE BOX

(1) 12" Core Bit Extension (48-17-4050)