Wera 7780 Insert Open-End Wrench 13 mm, 9x12 mm Drive, Chrome Vanadium Steel 05078670001

In professional workshops and industrial maintenance, torque wrenches are only as precise as the inserts they use. The Wera 7780 insert open-end wrench in 13 mm is the reliable link between your torque tool and the fastener. Slide it onto any 9x12 mm rectangular drive, and you get a secure, play-free connection that transmits torque accurately every time.

Key specifications

• Wrench size: 13 mm
• Drive: 9x12 mm rectangular insert
• Material: Chrome vanadium steel, chrome-plated
• Standard: DIN 3120-A 9
• Overall length: 55 mm
• Head width: 28 mm, head thickness: 8 mm
• For use with torque wrenches

Why choose it

Wera builds this insert from high-grade chrome vanadium steel, then chrome-plates it for corrosion resistance and easy cleaning. The precision-machined drive fits snugly, eliminating wobble and ensuring your torque setting reaches the bolt exactly as intended. It is a small part that makes a big difference in repeatable, accurate fastening.

Ideal use cases

• Torque-sensitive assembly in automotive and aerospace
• Calibration and verification of torque wrenches
• Industrial maintenance where documented torque is required
• Professional tool kits that demand interchangeable heads

Good to know

The insert is designed for 9x12 mm torque wrench receivers and complies with DIN 3120-A 9. It is not intended for use with impact tools or as a standalone wrench. Keep the drive surfaces clean and lightly lubricated to maintain accuracy and extend service life.