I opened the shipping container, inside was a very good compressor, a tool bag with hoses, an air chuck and a pressure gauge. The sensor is completely inaccurate and the air cartridge did not work (air leak from the broken cartridge). Unfortunately I didn't test this before we went to Baja and had to use it to inflate the tires on our truck, which is pretty confusing. when you deflate and the pressure is not what you think). I called Viair for help, when I got back they sent me to VM, I left a message and they didn't call me back. Called back again and was helped by a nice customer service lady; She sent another air cartridge for free. Unfortunately, this didn't work either. Viair definitely doesn't score well on quality control and the only reason they got two stars here is the nice attitude of the young lady who helped me. Hope the compressor holds up. It was an expensive purchase and I expected better.