Some fasteners are torqued with more than 100 ft-lb and are difficult to remove. A compressor is essential equipment for many of the procedures performed during a restoration. A single-stage air compressor is adequate for many smaller jobs. If, however, you’re going to paint, you need a two-stage compressor with a large tank to maintain consistent air pressure for extended periods. It powers air wrenches, grinders, paint sprayers, and countless other items. Take special care when using an air wrench to loosen rusty bolts, as it can easily break off the heads, which is a frustrating and time-consuming operation to correct.