If you look at the pictures you'll think this thing is well made, solid metal vents/grills. Perfect! I would like to buy that! Well, not so fast. What you really get is a device with poor construction and cheap plastic. Serious. It's very loud, and for what appears to be very powerful, it really doesn't beat your average cheap air pump. Also, it heats up very quickly. The most dangerous part is the tire pressure readings. It is designed to give accurate tire pressure to avoid over-inflation. Well it isn't. I discovered this the hard way. mini van. When I took my minivan for an oil change they checked my tire pressure and found it was indeed 50psi! I was shocked! They had to let the air out of the tires. Please note that when it comes to reviews, I try to give the most honest review I can so you know what you are buying. And you will be able to make the most informed decision.