Wera 781 B/A 3/8 inch Connection Part 05042672001

In a busy workshop, a mechanic needs to quickly switch between sockets and ratchets without fumbling. The Wera 781 B/A 3/8" Connection Part makes that possible. This adapter connects 3/8" square drive sockets to 3/8" square drive tools, such as Wera Zyklop ratchets. Its ball lock holds sockets securely, while the knurled grip allows easy handling even with oily hands. Made from high-performance chrome vanadium steel with a matt chrome-plated finish, it resists corrosion and stands up to daily use.

Key specifications

• Drive size (input): 3/8 inch square drive
• Drive size (output): 3/8 inch square drive
• Material: High-performance chrome vanadium steel
• Surface finish: Chrome-plated, matt
• Locking mechanism: Ball lock
• Grip enhancement: Knurling
• Overall length: 37 mm
• Maximum diameter: 18 mm
• Drive standard: DIN 3120-B 10, ISO 1174

Why choose it

This connection part is built for reliability. The ball lock ensures sockets stay in place during high-torque applications, reducing the risk of accidents. The knurled surface provides a secure grip, making it easy to attach and detach sockets quickly. Its corrosion-resistant chrome finish keeps it looking new after years of use.

Ideal use cases

• Connecting 3/8" sockets to ratchets in automotive repair
• Extending the reach of 3/8" drive tools in tight spaces
• Professional and DIY mechanics who demand durable hand tool accessories

Good to know

The Wera 781 B/A is part of the 781 series, known for quality and precision. It meets DIN 3120-B 10 and ISO 1174 standards, ensuring compatibility with a wide range of 3/8" drive tools.