There are two principle reasons to buy a torque wrench, longevity, and safety. The simple fact that you can adjust your torque means that you have a much higher degree of accuracy when it comes to dealing with those nuts and bolts. You are less likely to over or under tighten if you are able to adjust the setting. If you’re changing something important like the nuts on the wheels of your kid's favorite bike, or the handlebars on their scooter, you obviously want to ensure that you have carried out a safe and secure job. While regular wrenches have their place, you are reliant upon your own judgment and vision to assess the job has been completed successfully. With a torque wrench, you can eliminate the doubt factor and make sure that you achieve a reliable and accurate result.\r