MAXIMUM REACH FOR STRUCTURAL CORE PENETRATIONSWhen you're navigating thick concrete foundations or reinforced masonry on a heavy civil site, standard bit lengths often fall short of the breakthrough point. This 12-inch spline adapter is engineered for deep-hole drilling where structural depth is a factor. Designed to bridge the gap between your spline-drive rotary hammer and Milwaukee thin wall core bits, this shank provides the necessary extension to clear deep obstructions without sacrificing torque transfer. The hardened carbide construction ensures it stands up to the high-impact energy required for large-diameter core work in the most demanding environments. / 12-inch extension provides the necessary reach for drilling through thick slabs and foundation walls / Hardened carbide construction delivers superior durability under high-torque, high-impact loads / Optimized compatibility for Milwaukee 5-inch and 6-inch thin wall core bits / Spline shank interface ensures a secure, non-slip connection for consistent power delivery to the bit TECHNICAL SPECIFICATIONS SKU 48-03-3540 Length 12 in. Shank Type Spline Material Hardened Carbide Bit Compatibility 5 in. and 6 in. Thin Wall Core Bits WHAT'S IN THE BOX(1) 12 in. Spline Adapter Shank (48-03-3540)