What can it be and what do you use it for? Well, I am going to provide you a short guideline on which it's used for and how it works. You use a torque wrench on things which you need to be sure are tight. Lug nuts for example. It's very important that your lug nuts have been tightened down properly. It not be very valuable to get them coming loose as you are driving down the road at 50+ mph. That would definitely not be a phone call I'd like to receive at all! There's a dial at the same end of the wrench. After findingout the specifications , you are going to turn that dial up to match exactly what the manufacturer suggested. Be certain that the lug nut (or another item you may be working on) is free of debris and dirt. Should you need to, add a little oil to it. Just a drop or two ought to do it. Place the wrench end on the drag and flip, you will continue turning until you feel as if the wrench has shrunk. It may even feel like it broke, but have no fear, tha