If you are going to work on your diesel fuel injectors, you are going to need a torque wrench. If you are going to tighten your alloy wheel lug bolts properly, you should use a torque wrench. In fact, if you do your own work, you should have a 1/2-inch clicker torque wrench in your toolbox. I know why you don't have one. They tend to be expensive for the limited amount you might use one. Well, now you can get a quality one for a very good price. This is a must-have for working on diesel fuel injectors.
It comes with a nice molded plastic case and instructions. This wrench is 18 inches long for good hand torque. Fits all standard 1/2-inch drive sockets.