Core Bit Extension Rod and Chuck, 36", Extension Rod, 1-1/4" X 7 UNC 4-AEDF-900

Extensions and chucks for core drill bits. Benefits. Allows operators to reach deeper drilling distances by adding extension rods between the drill motor and core bit. Eliminates the need for extra long bits, reducing tooling costs. Enables drilling through thick walls, floors, foundations, and multi-layer materials where standard bit lengths fall short. Available in a range of thread standards and connection styles, ensuring compatibility with CS Unitec drills and most industry standard core bits. Precision machined steel provides excellent rigidity and torque transfer, even under heavy load. Applications and Usage. Core Bit Extension Rod ideal for drilling through thick concrete walls, slabs, foundations, and structural elements where standard bit lengths are insufficient. Supports long reach drilling for conduit runs, service entrances, cable pathways, and telecom penetrations. Commonly used in bridges, tunnels, utility vaults, and industrial facilities where deep penetrations are required. Extension rods allow operators to maintain proper drill positioning while reaching recessed, obstructed, or offset drilling locations.