This is the best product in its class. Well made and durable. Really good technique. I can compare with the first Cobalt model. I borrowed my son's cobalt. I liked it but there were a few downsides. The new (above model) has a shape that makes it more stable and durable. It's stable no matter which side you attach it to. No more useless air cap holders. They got stuck all the time and needed a screwdriver to get them out. The dashboard is at the top where it is clearly visible. The old one was then facing forward and had to be flipped over to see it. He does what he has to do - blow things up. Connects to an electrical extension cord or cigarette lighter socket. It just works! My son is jealous!