Torque wrench tools for mechanics from quality manufacturers at great value prices. Torque wrenches are made to tighten a fastener to a given torque.This means you can tighten a nut or bolt with precision using exactly the right amount of pressure, or torque. This helps to avoid over-tightening of nuts and bolts which can cause damage at a later date. In today's precision-made engines torque wrenches are becoming more and more useful as they allow for precise tension and loading. They usually work by clicking when the correct torque is achieved, but some also provide digital readouts.