How to use
Red part is a locking ring
Pull the lock ring down with your finger, unlock it, turn the grip while it is unlocked, and the torque can be changed. After setting is done, release your finger along the top and bottom center line, and turn it to lock.
Note:
1. Increase the value clockwise and reduce the value counterclockwise.
2. After setting the necessary torque, release your hand and the button will bounce back and lock the handle.
3. For safety use, you need to turn the handle left and right to make sure the wrench is locked.