The STAHLWILLE Quick Torque Wrench features the company's quick-release safety lock for rapid adjustment and a wear-resistant trigger system with a flexible rod that eliminates the need to reset and store the wrench to zero. Users can select from a wide range of interchangeable insertable tool heads that consist of ratchet drives, open-end, ring, and square attachments for demanding applications. The torque wrench can be calibrated using the company's perfectControl calibration device (No. 7794 or No. 7706), setting the high and low limits without disassembly. Further loading the wrench after triggering does not affect the triggering mechanism and protects against damage, says the company.