Has anyone ever used one of these? I think it came off some sort of medical equipment. Some guy that used to work with me got them from his local praxair guy. I filled a totally empty 35" tire to 15 psi in less than a minute and from 15 to 30 in an additional minute and 15 seconds. I put a gage directly onto the output of the pump and it read 120psi. It is 120V but I figure I could hard wire and hard mount this in the back of my 80. I wounder if I could fit it in the rear body access where the jack is. Just a thought.