A torque wrench is a precision tool used to apply a specific amount of twisting force when tightening bolts and nuts. It ensures components like spark plugs, wheel lug nuts, and engine parts are secured to manufacturer specifications, preventing damage from over- or under-tightening. Essential for DIY mechanics and professionals, torque wrenches come in click, digital, and beam styles, each offering accuracy and ease of use. Proper use extends the life of parts and enhances safety—especially critical for suspension and engine components. Always calibrate your torque wrench periodically and follow the vehicle’s torque chart for best results. This simple tool promotes precision and reliability in every repair.