Okay impressed. I was surprised at how small the Erupt Inflator was. I was also surprised at how heavy the tire inflator was given its small size. So it's time to test the small air pump under real conditions. One of my cars had all 4 tires flat. After I connected the small tire inflator and attached the air supply hose to the tire stem; I turned it on. I was just shocked at how quiet it was. I was also amazed at how strong the air supply was and how quickly the tires inflated. Now for the price, grrrrrrr! But I think it's all about; You get what you pay for. So I'd heartily recommend this little powerhouse, but your wallet will groan.