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Product Specifications/How To Use

When I use a click-type torque wrench (for example, a wrench in the QL series), after sufficient tightening I hear a clicking sound and feel a click as well. What mechanism is involved in this?

As you can see in the diagram below, when the set torque value is achieved the tail section of the head makes contact with the tube, making the click contact sound and creating the sensation you feel.
* Note: If you continue tightening after feeling the click, the tail section of the head will remain in contact with the tube, and excessive torque will result.

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