DEDRA 17H305 impact socket accessory

The Dedra 1/2" 250 mm extension bar (model 17H305) is a compact hand tool accessory designed to increase the effective reach of 1/2-inch drive socket wrenches and ratchets. With a 250 mm length, it enables access to recessed, obstructed, or hard-to-reach fasteners commonly found in automotive repair, machinery maintenance, and general mechanical work. The extension bar is made to fit standard 1/2" drive sockets and works with a variety of ratchet handles and breaker bars used in professional and DIY settings.

Advantages

The extension bar provides an extended working range without altering leverage or torque characteristics of the connected ratchet. Its uniform length and standardized 1/2" drive interface ensure compatibility with common sockets and accessories. The compact, straight design allows insertion into narrow spaces while maintaining a solid, secure connection between tool and fastener. The product is suitable for repeated use in workshop environments and for occasional household repairs.

Suitable for

• Reaching recessed bolts and nuts in engines and gearboxes
• Accessing fasteners located behind panels or structural obstructions
• Maintenance tasks on agricultural and industrial machinery
• General automotive repair and DIY mechanical projects

Key specifications

• Drive size: 1/2 inch compatible
• Length: 250 mm working extension
• Design: straight extension bar for sockets and ratchets
• Compatibility: fits standard 1/2" drive sockets and ratchet handles
• Intended use: manual hand tool accessory for mechanical fastening tasks

How to use

Attach the extension bar to the 1/2" drive of a compatible ratchet or breaker bar until it locks in place, then attach the appropriate 1/2" socket to the opposite end. Position the socket over the fastener and operate the ratchet or bar as usual, using the extension to reach otherwise inaccessible locations. Avoid applying excessive side loads; align the extension and socket with the fastener axis to reduce wear and the risk of rounding fastener heads.

Usage recommendations

For safe and effective use, select the correct socket size before extending into tight spaces, inspect the extension and connections for wear or damage before each use, and avoid using the extension bar with power tools unless it is explicitly rated for powered use.