well i got one just like it, and with an extra five gallon tank it works quite well. Now you can't get in a hurry or nothin, but is is great for portable use. I have a big 30 gallon campbell hausfeld that i use at home for air tools. Yes the emglo is made for nail guns, but with the 4 gallon and the extra five gallon for a total of 9 galons of air will allow me to take off all the lug nuts on my truck, with my ingersoll 231 impact. and even put them back on after it recharges(which is bout 30 seconds), so if you aint in a hurry it will work fine, but i will steer my friend towards a bigger unit. And besides, kinda hard to throw a big 30 gallon compressor in your truck, or carry it in the house, the little emglos you can, and with an extra tank be able to do what its big brother can do but a whole lot more portable..
Thanks guys!! snapper