EXTENSION BAR 1/2″ DRIVE X 100MM (4″)

This is a 1/2″ drive extension bar, 100mm (4″) in length. It’s designed to provide additional reach for sockets and accessories in situations where direct access with a ratchet or impact wrench is obstructed. This tool is for professional mechanics, fabricators, industrial maintenance technicians, and other tradespeople requiring reliable drive extension in demanding environments.

What You Get

• 1/2″ square drive male end
• 1/2″ square drive female end
• 100mm (4″) overall length
• Ball detent for secure socket retention

Built For

This extension bar is built for applications requiring extended reach with 1/2″ drive sockets. This includes accessing fasteners in confined engine bays, deep machinery housings, undercarriages, and other areas where standard tool length is insufficient. It is suitable for use with both hand tools (ratchets, breaker bars) and power tools (impact wrenches, air ratchets).

Construction

The extension bar is constructed from a robust steel alloy, finished with a dark, matte coating, likely black oxide or phosphate. This finish provides corrosion resistance and reduces glare in working environments. The material exhibits a high tensile strength, indicating suitability for high-torque applications. The female drive end features a through-hole for a detent pin, and the male drive end incorporates a spring-loaded ball detent for positive socket retention, preventing accidental disengagement during use. The shaft is solid, ensuring maximum strength and resistance to bending under load.