EXTENSION BAR 1/4″ DRIVE X 100MM ( 4″)

This 1/4″ drive x 100mm (4″) extension bar is a precision-machined accessory designed for professional tradespeople requiring extended reach in confined or recessed work areas. It facilitates the engagement of fasteners with a socket wrench where direct access is obstructed by surrounding components or depth.

What You Get

• One (1) 1/4″ Drive Extension Bar
• 100mm (approximately 4 inches) effective length
• Standard 1/4″ square drive male and female ends

Built For

This extension bar is engineered for applications demanding precise torque transfer and reliable connection in tight spaces. It is suitable for automotive technicians working on engine bays, HVAC installers accessing ductwork, electronics repair professionals dealing with recessed fasteners, and general mechanics requiring additional clearance. Its 100mm length provides a practical extension without introducing excessive flex, maintaining control and accuracy in critical fastening operations.

Construction

The extension bar features a robust, uniform dark grey or black finish, indicative of a durable industrial coating such as black oxide or phosphate. This finish provides enhanced corrosion resistance and reduces glare in well-lit environments. A subtle lighter grey or silver ring is visible around the base of the male drive, suggesting a distinct collar or a machined detail. The material is high-strength steel, precisely machined to ensure a secure fit with both the drive tool and the socket, minimizing play and maximizing torque transfer efficiency. The male and female square drives are manufactured to tight tolerances to prevent stripping and ensure consistent performance under load.