Or more Air Hose to reach your work area.

I bought Harbor Freight 2 hp 8 gal tank 110-120 volt and the typical 125 psi. As a handier supplement my Cambel Hasfield 220Volt don't remember the other specs but the Motor and Pump are much larger then the Harbor Freight one. It originally cost $260 in 1980 something Dollars.

If you go to Harbor Freight you can look at user reviews of the products. Likely the same with Sears or Amazon. You can look at the reviews and pic a model you like and then use that info to shop around.

Some of the items I used to frequently use compressed air for that taxes the Compressor is using a Metal Cutoff Wheeled Tool or Grinding Tool.

As a home mechanic I have seldom used pneumatic impact wrenches unless for some tough specific task.

I mostly use Harbor Freight 12 volt Impact Wrenches (which are actually made for removing lug nuts/bolts; I have one in each Vehicle) and they have nearly always substituted OK for the penumatic impact wrenches.

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84 300D, 82 Volvo 244Gl Diesel