Socket Wrench Gedore R78900550 1/2 inch Drive 10-32mm

The Gedore R78900550 adjustable torque wrench with 1/2 inch square drive is designed for controlled screw tightening between 5 and 550 N·m and delivers repeatable, precision-like results. It combines an integrated ratchet-head function with a clear audible and tactile torque trigger, supporting both clockwise and anti-clockwise operation by switching the mushroom head or push-through square. The set torque value is displayed on an easy-to-read scale with magnifier and a 1/10 sub-scale for fine adjustment; working accuracy is ±3% of the set torque.

Advantages

This Gedore torque wrench offers precise, repeatable torque application across a wide range, an integrated square drive with ratchet mechanism for efficient operation, and a locking mechanism at the handle end to secure the selected torque. The audible and tactile trigger ensures clear feedback at torque release, and the delivery includes a test certificate according to DIN EN ISO 6789 for traceability.

Suitable for

• Tightening and loosening bolts and nuts with a 1/2" drive
• Applications requiring controlled torque from 5 to 550 N·m
• Automotive, industrial maintenance, and heavy equipment assembly
• Professional workshops and skilled DIY projects

Key specifications

• Brand: gedore red
• Model / MPN: 3301220 (Gedore R78900550)
• EAN: 4060833012201
• Drive size: 1/2 inch (square drive)
• Torque range: 5–550 N·m
• Accuracy: ±3% of set torque
• Socket compatibility: 10–32 mm
• Includes: torque wrench with test certificate (DIN EN ISO 6789) and operating instructions

How to use

Set the desired torque by turning the handle and use the magnified scale and 1/10 sub-scale for precise adjustment. Lock the chosen value with the lock at the end of the handle. Attach the required socket (10–32 mm) to the 1/2" square drive, select the rotation direction by switching the mushroom head or push-through square, and apply force until the torque trigger is heard and felt, indicating torque release.

Usage recommendations

For accurate results, calibrate the wrench periodically and follow the included test certificate and operating instructions. Avoid using the wrench to apply impact blows or as a breaker bar; use sockets rated for the torque range.