Hikoki SDS‑Max Extension 750 mm — SDS‑Max Rotary Hammer Extension, model 751676

Hikoki SDS‑Max Extension 750 mm (model 751676) is an accessory designed to extend the reach of SDS‑Max rotary hammers. The 750 mm rigid extension attaches to the tool's SDS‑Max interface and accepts standard SDS‑Max bits, allowing drilling and chiseling operations at greater depth or in confined, hard‑to‑reach locations. It is intended for use where standard bit length is insufficient and precise alignment is required for deep holes or overhead work.

Advantages

The extension provides a straight, stable connection between the rotary hammer and the bit, reducing deflection during deep drilling. Its 750 mm length increases working reach without the need for multiple shorter extensions or improvised adapters. Designed for compatibility with SDS‑Max interfaces, the extension preserves bit seating and torque transfer for reliable performance. The accessory is suitable for both professional trades and do‑it‑yourself projects where a longer working length is necessary.

Suitable for

• Drilling deep holes in concrete, masonry, and stone where standard bit length is insufficient
• Chiseling tasks in recessed or hard‑to‑access areas
• Overhead or elevated drilling where additional reach improves safety and ergonomics
• Renovation and construction jobs requiring precise alignment of long bits

Key specifications

• Interface type: SDS‑Max compatible connection
• Effective length: 750 mm extension between tool and bit
• Compatibility: fits rotary hammers designed for SDS‑Max tooling
• Function: extends drilling and chiseling reach while maintaining torque transfer and bit retention

How to use

Ensure the rotary hammer is switched off and disconnected from the power source before fitting the extension. Insert the extension into the tool's SDS‑Max chuck until it locks into place, then insert the SDS‑Max bit into the extension and verify secure seating. Use the rotary hammer at the recommended drill or chisel settings for the bit and material. After use, disconnect the power source and remove the bit and extension by releasing the SDS‑Max locking mechanism.

Usage recommendations

Always check compatibility with your SDS‑Max rotary hammer and the intended bit type. For deep drilling, ensure adequate cooling and debris removal, and use correct drill speeds and hammer settings for the material. Inspect the extension and bit for wear or damage before each use and replace components that show significant wear to maintain safe and accurate operation.